15 Best Digital Products to Sell Online

Let’s be honest, everyone wants to make money while they sleep. And in 2025, affiliate marketing makes that dream more realistic than ever. If you’ve been asking yourself how to start affiliate marketing in 2025, this guide is your blueprint. 

Most people start affiliate marketing as a side hustle and eventually grow it into a thriving business. The best part? It requires little to no startup capital, just your commitment, consistency, and the right product with an irresistible offer.

Whether you’re a content creator, coach, or complete beginner, we’ll show you how to pick a niche, find the best programs, and build a system that earns money even when you’re offline.

What Is Affiliate Marketing?

Affiliate marketing is a performance-based marketing model where an individual promotes another person's product or services and earns a commission for each sale made through their unique affiliate link. 

How Does Affiliate Marketing Work?

Affiliate marketing operates on a simple but powerful ecosystem. It involves four main players: the merchant, the affiliate, the consumer, and the network. Each plays a key role in turning a simple recommendation into real income.

1. The Merchant: The Merchant is the advertiser or brand. This is the person (or entity) that creates and sells a product or service. They use affiliates to push their products to new audiences. 

A perfect example includes people like Elizabeth Olowu and The Elevated MC who use Mainstack’s referral program to push their products.

2. The Affiliate: The Affiliate is the publisher/promoter. This is the person or business promoting the merchant's products through their unique tracking link. The affiliates earn a commission for each sale, lead, or action generated through their referral.  A YouTuber who promotes Mainstack's products in their video description acts as an affiliate.
3. The Consumer: Another key player is the consumer who clicks the affiliate link and makes a purchase. They pay the same price, but their purchase helps the affiliate earn a commission. When someone clicks a creator's link in bio and buys through any of their affiliate links, they are the consumer in the chain. 

4. The Network: Lastly, the network acts as the middleman that connects merchants (the product owners) and affiliates (the promoters). It handles the technical side, that is, tracking clicks, managing payments, and providing unique referral links. Popular affiliate networks include platforms like ShareASale, Impact, and CJ Affiliate, which host thousands of brands and streamline everything in one place.

However, not all companies rely on external networks. Mainstack, for example, runs its own in-house affiliate system. This means affiliates can sign up directly on Mainstack, generate referral links, and track performance from their dashboards. Thus, no third-party platform is needed. 

Affiliate marketing has transformed beyond simple website links. Now, affiliates leverage blogs, YouTube, TikTok, Instagram, and emails to promote products and earn commissions. Bloggers may compare digital tools with affiliate links, YouTubers create product tutorials with links in descriptions, and TikTok creators share engaging product demos. Email marketers also provide personalized recommendations, converting loyal subscribers into repeat customers.

Why Affiliate Marketing Is Still Profitable in 2025

If you're wondering if affiliate marketing is still profitable in 2025, the answer is yes, but it's evolved. 

With the rise of the creator and influencer economy, anyone can now make money by promoting products they genuinely believe in. Whether you’re a YouTuber, blogger, or TikTok creator, it’s profitable because it’s built around freedom, creativity, and strategy. Here’s why it works so well:

1. ‍You don’t need a big budget to start
   There’s no product to make, warehouse to rent, or customer service to manage. All you really need is your platform and an internet connection. That low barrier to entry makes it easy for anyone to start earning quickly.‍
2. Your content keeps paying you back
   A well-optimized video or blog post can keep earning long after you’ve published it. Once people start discovering it, the commissions can roll in for months or even years without you lifting a finger.‍
3. You earn based on results, not hours
   Affiliate marketing doesn’t care about your résumé or work schedule. If your content converts, you get paid. That performance-based system means your earning potential grows with your skill.‍
4. Some products pay you over and over
   The smartest affiliates focus on products that pay recurring commissions like subscription tools or digital services. One referral can turn into a steady stream of income as long as the customer stays subscribed.‍
5. You can run it from anywhere
   Whether you’re working from your bedroom, a coffee shop, or the beach, affiliate marketing fits around your lifestyle. You can scale it up when you have time, or let it run in the background when you don’t.‍
6. People buy from those they trust
   The more authentic you are with your recommendations, the more your audience listens. Over time, you build a reputation that turns casual followers into loyal supporters, and loyal supporters into constant buyers.‍
7. You get paid to share what you love
   At its core, affiliate marketing is about connection. You’re sharing products you already use or believe in. That makes it feel less like selling and more like helping. The income that follows feels organic, not forced.

How to Start Affiliate Marketing in 2025 (Step-by-Step)

Starting affiliate marketing in 2025 is easier than you think. You don’t need a large audience or costly tools—just strategy and consistency. This section covers how to set up your affiliate business, pick the right products, and earn commissions sustainably.

Step 1 : Pick a Niche

Choosing the right niche is key to success in affiliate marketing. It defines your audience, products, and earning potential. The best niche balances demand, relevance, and personal interest.

To pick a niche, start by focusing on topics you care about. Is it tech, lifestyle, beauty, or finance? Choose a product you believe in so your content feels authentic and builds trust. But passion alone isn’t enough. Your niche also needs to be in high demand and solve a real problem.

For example, a niche like “how to become a ghostwriter” works better because it targets people who already know what they want and are actively looking for tools, courses, or platforms to help them get started. On the other hand, a broad topic like “how to make money” might be too vague. It attracts a wide audience but rarely converts because most people are just browsing for ideas, not ready to buy.

The key is to find the sweet spot: something you're interested in, that people are looking for, and that has affiliate programs with good commissions.

Once you’ve defined that, everything else; your content, audience, and income, starts to fall into place.

Step 2 : Research Affiliate Programs

After choosing your niche, the next step is finding the right affiliate programs to join. Not all programs are created equal, so it’s important to look for ones that align with your audience and offer real earning potential. Look for programs with good commissions, reliable tracking, timely payouts, and solid reputations.

Begin by looking at what successful creators in your niche are promoting; this is often an indicator of what works well. Then, compare the program structures. Check for details like:

• Commission rates: What percentage do you earn per sale?
• Cookie duration: How long after someone clicks your link do you still get credit for the purchase?
• Payment terms: Are payouts monthly, weekly, or threshold-based?
• Support and resources: Does the program provide marketing assets, analytics, or help for affiliates?

For beginners, Mainstack offers an easy affiliate setup for creators selling digital products or services. You can generate links, track clicks, and earn up to 30% commission on each sale, which is paid monthly.

Other strong options include Amazon Associates for physical products, ClickBank for digital items, and Impact for big brands and SaaS tools.

Choose programs that align with your content and audience. Promoting products you trust builds credibility and trust drives sales.

Step 3: Create a Platform to Promote Products

After you've chosen your affiliate programs, the next step is to decide where you'll promote them. The best platform is determined by your strengths. 

If you enjoy writing and sharing detailed insights, a blog or website is an excellent place to start. For example, successful affiliate marketers, like Wirecutter, use SEO-driven articles to review products, compare tools, and rank on Google for high-converting keywords. 

This approach builds long-term visibility and passive traffic.

If you’re more comfortable on camera, YouTube is a great platform. Creators like Marques Brownlee (MKBHD) include affiliate links to products they review. Video content is great because it helps viewers see the product in action before making a decision.

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For those who prefer short-form content, TikTok and Instagram are ideal for quick, engaging product demos or tips. Influencers like Erika Kullberg and Kat Norton (Miss Excel) utilize short videos to showcase products while subtly including affiliate links in captions or bios.

And if you already have an email list, newsletters can be an effective channel for affiliate promotions. Creators such as Ali Abdaal and James Clear use email to recommend products, courses, or tools they personally trust, driving high engagement and repeat clicks.

To make managing your links easier, Mainstack offers an all-in-one solution. You can create a personal link-in-bio page or digital storefront that houses all your affiliate links, products, and offers in one place. 

Even better, it provides real-time analytics to track clicks and conversions, helping you see which platforms or products perform best.

Learn more: How to start Affiliate marketing on Mainstack

Step 4 : Choose A Products to sell

After choosing your niche and platform, decide which products to promote. The success of your affiliate marketing journey depends on what product you sell and how well it matches your audience’s needs.

Focus on three important factors: price, quality, and reputation. Products with favorable customer feedback and visible demand are more likely to convert. It's not just about making big commissions; it's about promoting something people will actually buy and appreciate you for recommending.

For beginners, avoid promoting too many products at once. Start small with two or three products that fit your niche, then expand as you grow. For example, designers can promote tools like Canva or Adobe Express that solve real problems.

Be authentic. Promote products you use or truly believe in. The most successful affiliates are not pushy salespeople; rather, they are helpful guides who provide real value.

Over time, you can test new offers or bundles, and consider creating your own digital products to scale further.

Step 5 : Create High-Quality Content

The success of affiliate marketing lies in creating content that informs, educates, or solves real problems. Audiences don’t respond to random product links; they want useful insights and genuine experiences.

Create content that builds trust and positions you as an authority in your niche. Some effective formats include:

• Tutorials: Teach your audience how to use a tool or service. Example: “How to design stunning social media graphics using Canva.”
  

• Product Comparisons: Help readers make better decisions, like “ConvertKit vs Mailchimp: Which is better for email marketing?”
  
  
• Listicles: Curate valuable resources such as “Top 10 tools every freelancer needs in 2025.”

Use SEO to make your content discoverable and storytelling to make it relatable. Combine this with social media content for faster growth.

Ensure you publish consistently to keep your audience interested. The more value you deliver, the more trust you earn, and that’s what drives affiliate conversions.

Step 6 : Drive Traffic to Your Affiliate Links

Creating exceptional content is half the job; the next step is driving traffic to it. Without it, even top-notch affiliate content won’t convert.

There are both free and paid methods to drive traffic, and most beginners start with the free options before scaling up.

Master free strategies first to learn what works. For example, you can optimize for SEO to rank on Google or YouTube, share short tutorials or demos on Pinterest or TikTok, and use email marketing to send tips and recommendations to subscribers.

Once you gain traction, scale with paid promotion for faster growth. Test paid options like Instagram, Facebook, or Google Ads to reach targeted audiences, or collaborate with influencers for wider exposure.

Step 7: Track Results and Optimize

Tracking performance separates hobbyists from serious affiliate marketers. After publishing your content, monitor clicks, conversions, and earnings. Ideally, your affiliate platform should have a dashboard to help you monitor this. You can also use tools like Google Analytics to track content and channels that drive results.

For instance, a “Top 10 Tools for Remote Work” post might outperform tutorials, or TikTok videos might convert better than emails. Use this data to refine what works; adjust link placement, update calls to action, or test new products.

Treat affiliate marketing as an ongoing experiment. Review data regularly, optimize top links, and refine strategy to increase conversions and income over time.

Common Mistakes Beginner Affiliate Marketers Should Avoid

Many beginners rush into affiliate marketing without a strategy. One common mistake is promoting too many products at once, which makes content feel cluttered and less trustworthy.

Neglecting content quality also hurts sales; the best products won’t sell if your message isn’t valuable or actionable. Always disclose affiliate links to stay credible, and be patient; consistent effort is what leads to steady income.

Start your affiliate journey today

Affiliate marketing isn’t about luck. It requires strategy, perseverance, and the use of the appropriate tools. The beauty of it lies in its flexibility: you can build a business from your laptop, promote products you already love, and earn while you sleep. 

Every post, video, or email you share is an opportunity to grow your influence and your income.

If you want an easy way to organize your affiliate links, host products, and track clicks in one place, Mainstack gives you the structure you need to turn your ideas into income.

As more businesses find ways to thrive in a crowded market, the best digital marketing tools in 2025 provide smarter, faster, and more efficient methods to reach customers. 

What began as manual tracking and guesswork has now evolved into powerful systems that streamline every stage of marketing. This evolution enables startups and established brands to compete and grow in meaningful ways.

This guide will give a complete, step-by-step plan and downloadable checklist to help you choose the right tools, set up effective strategies, and track your progress with ease.

What Are Digital Marketing Tools?

Digital marketing tools are online platforms, apps, or software that help businesses plan, manage, and measure their marketing strategies across channels like social media, email, SEO, content, and advertising to boost engagement, generate leads, and increase sales.

Why Use Digital Marketing Tools?

Digital marketing tools make life easier by automating repetitive tasks such as post scheduling, email distribution, and campaign tracking. Instead of getting overwhelmed with manual tasks, you have more time to focus on the creative aspects of growing your business. 

They also provide real-time feedback on what works and what doesn't. With clear data on customer behavior and campaign performance, it's much easier to make better decisions that are impactful to your business.

With how fast the business world is moving, the right tools can help your brand stand out. Whether it's personalizing your messages or reaching the right audience faster, they give you an advantage over businesses that still rely on traditional methods.

And the best part? They’re often far more affordable than traditional marketing. Small businesses can now benefit from effective tools without breaking the bank, making online growth more accessible than ever. Traditional marketing, on the other hand, usually involves methods like print ads, billboards, TV, or radio spots, all of which are costly and difficult to track.

For example, a small bakery wanting to advertise through a newspaper ad might spend hundreds of dollars for just a single placement, with no clear way to measure how many people actually came in because of it. With digital marketing tools, that same bakery could run targeted social media ads for a fraction of the price, track clicks and conversions in real time, and adjust the campaign instantly to get better results.

Best Digital Marketing Tools by Category

With many options available, the right tool depends on your marketing goals. Here’s a list of top digital marketing tools by category to help you find what fits your business.

All-in-One Tools for Creators 

For creators who want everything in one place, all-in-one tools make it easier to manage content, grow an audience, and track performance without juggling multiple platforms.

1. Mainstack for all-in-one storefront and landing page

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Mainstack is an all-in-one platform for creators, entrepreneurs, and small businesses to build landing pages, showcase products, and sell directly to their audience. It enables you to transform your online presence into a monetizable hub without the need for multiple tools, making it ideal for anyone who wants to manage everything in one place.

Some of its standout features include customizable landing pages, a built-in storefront for both digital and physical products, and an analytics dashboard that tracks audience engagement. It also comes with payment integrations for seamless sales and a simple link-in-bio option that works perfectly across social platforms.

Mainstack offers a free plan with core features, making it accessible to beginners. The platform supports flexible payment options, including one-time fees, subscriptions, pay-what-you-want models, and even crypto payments in over 135 currencies. The icing of the cake is that Mainstack doesn’t charge monthly fees. It only collects a small 3% platform fee when you earn, so you keep more of your revenue.

The Best SEO & Content Marketing Tools

SEO and content marketing tools help businesses attract the right audience and rank higher on search engines. They simplify keyword research, on-page optimization, and content planning to improve results.

2. Ahrefs for keyword research

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Ahrefs is a leading SEO platform for keyword research, backlink analysis, and competitor insights. Its free tools let you generate up to 150 keyword ideas, check difficulty, and track rankings. This makes it ideal for small businesses or individuals starting out.

Ahrefs is known for its accurate data and keyword precision, which gives marketers better keywords to target. The downside, however, is that you need a paid plan to unlock advanced features like detailed backlink reports or larger keyword volumes, which can be pricey. 

Regardless, the upgrade unlocks one of the most powerful SEO suites on the market.

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Pricing: Free; paid plans start at $129/month.

3. Semrush for competitor analysis

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If you want to carry out a detailed competitor analysis, then Semrush is the best tool for that. It gives you a clear picture of who your competitors are, which keywords they rank for, where their traffic comes from, and what ads they run. 

This makes it a powerful tool to find strategy gaps and new growth opportunities.

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While using Semrush is great, its wide range of insights can be overwhelming for beginners. Also, pricing may be high for small teams. However, for businesses ready to take SEO and digital marketing seriously, Semrush provides exceptional value.

Pricing: Free trial available; paid plans start at $139/month.

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4. Google Keyword Planner (best free SEO tool)

Google Keyword Planner is a solid free tool for basic keyword research. Originally built for Google Ads, it lets you find keyword ideas, search volumes, and competition levels using data directly from Google. It’s less detailed than paid tools like Ahrefs or Semrush but great for getting started on a budget.

Social Media Management Tools

Managing multiple social accounts is time-consuming, but social media tools help by scheduling posts, tracking performance, and boosting engagement. Here’s how the top options compare:

5. Buffer for simple scheduling

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Buffer is a simple social media tool for scheduling and publishing posts across Facebook, Instagram, LinkedIn, and X (Twitter). Its clean interface makes it ideal for small businesses and creators who want an easy way to stay consistent. 

While Buffer’s free and lower-tier plans offer only basic analytics, its paid plans include more in-depth performance insights. Where it really shines, though, is in reliable, straightforward scheduling that keeps your content organized and on time.

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Pricing: Free plan available; paid plans start at $5/month per channel.

6. Sprout Social for analytics and reporting

Sprout Social is a powerful social media tool with advanced analytics, detailed reporting, and engagement features. It’s ideal for teams and agencies that want to track campaign performance and make data-driven decisions.

What makes Sprout Social stand out is the quality of its insights. You can track audience growth, engagement trends, and campaign performance in detail, all while collaborating with your team on one platform. The downside of using Sprout Social is that it comes at a higher cost, which may be challenging for small businesses.

Pricing: Free trial available; paid plans start at $249/month.‍

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7. Bonus: A Free Alternative — Meta Business Suite

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If you’re not ready to invest in a paid scheduling tool, Meta Business Suite is a great free option. Designed for Facebook and Instagram, it lets you plan and schedule posts, reply to messages, and check performance insights, all from one dashboard.

While it’s limited to Meta platforms, it’s surprisingly effective for small businesses, creators, and entrepreneurs who mainly use Facebook and Instagram to reach their audience. You can manage both accounts in one place without needing extra tools, making it a simple, no-cost way to stay consistent online.

Email Marketing & Automation Tools

Email marketing tools help businesses send campaigns, automate follow-ups, segment audiences, and personalize content. The right choice depends on your audience size and goals.

8. Mailchimp (best for all-in-one email campaigns)

Mailchimp is known for its ease of use and range of features, from drag-and-drop email builders to automation workflows and audience segmentation. It’s great for managing campaigns in one place: from design to copy to planning to tracking analytics.

The free plan is generous, but pricing scales as your subscriber list grows.
Pricing: Free plan available; paid plans start at $13/month.

9. Kit formerly ConvertKit (best for creators selling digital products) 

One advantage of using Kit is how  it supports audience growth and monetization. You can tag and organize subscribers based on their actions, build custom sequences, and nurture leads without needing advanced technical skills. 

While its email templates are minimal, it offers an efficient system for growing and monetizing your audience.

Pricing: Free plan available for up to 1,000 subscribers; paid plans start at $15/month.

10. MailerLite (best for simplicity and affordability)

MailerLite is a lightweight, budget-friendly option that still covers essential features like automation, landing pages, and sign-up forms. It’s particularly appealing to small businesses or beginners who want a straightforward way to run email campaigns without complexity.

Pricing: Free plan available for up to 500 subscribers; paid plans start at $9/month.

Analytics & Reporting Tools

Analytics tools help businesses understand how campaigns perform, how users behave on websites or apps, and where to improve to maximize ROI. Here are some analytics tools:

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11. Google Analytics 4 (best for website performance tracking)

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Google Analytics 4 (GA4) is the go-to tool for tracking website traffic, conversions, and user behavior. It helps you understand where visitors are coming from, how they interact with your content, and which channels drive the most revenue. While it’s powerful, the setup can feel complex for beginners.
Pricing: Free.

12. Hotjar (best for visual behavior insights)‍

Hotjar takes analytics further by providing heatmaps, session recordings, and user feedback tools. Instead of just numbers, you can see exactly how people click, scroll, and interact with your website, making it easier to spot usability issues and optimize conversions.
Pricing: Free plan available; paid plans start at $32/month.

AI-Powered Marketing Tools

AI tools are transforming digital marketing by helping businesses create content faster, personalize messaging, and make smarter predictions about customer behavior.

13. Jasper AI (best for long-form marketing content)

Jasper AI specializes in generating blog posts, ad copy, and marketing emails using AI. It’s trained on marketing frameworks and tones, making it a solid choice for brands that want polished, conversion-focused writing at scale.
Pricing: Plans start at $59/month.

14. Copy.ai (best for quick copywriting)

Design & Creative Tools

Great marketing requires visuals that capture attention, and design tools make it easy for anyone even without design skills to create professional-looking graphics and campaigns.

15. Canva (best for quick, versatile designs)

‍Canva is one of the most popular design tools, offering templates for social media, presentations, ads, and more. It is so beginner-friendly that anyone could work around the already existing templates and create a masterpiece. Its drag-and-drop interface makes it simple for non-designers, and the free version is robust enough for most small business needs.

Pricing: Free plan available; Canva Pro starts at $12.99/month.

16. Figma (best for collaborative design)

Figma is a design tool built for collaboration. Teams can create, edit, and comment on designs in real time, making it perfect for marketers working with designers or agencies. It’s especially useful for UI/UX projects and campaign mockups.
Pricing: Free plan available; paid plans start at $5/month depending on the collab, dev or dull seat..

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17. Adobe Express (best for professional-grade templates)

Paid Ads & PPC Tools

Running paid ad campaigns requires precise targeting, careful budgeting, and clear tracking to make sure every dollar counts. Paid Ads and PPC tools simplify campaign management, measure ROI, and help businesses reach the right audiences faster.

18. Google Ads (best for search engine campaigns)

Google Ads is the most widely used platform for pay-per-click advertising. It allows businesses to bid on keywords and display ads at the top of search results, reaching customers at the exact moment they’re searching for solutions. Its strength is intent-driven traffic, though competition for popular keywords can make costs high.
Pricing: Pay-per-click model, no fixed monthly fee.

19. Meta Ads Manager (best for social ad targeting)

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Pricing: Flexible budget; pay-per-click or impression.

Collaboration & Project Management Tools

With so many moving parts in digital marketing, project management tools help teams stay organized, collaborate smoothly, and ensure campaigns launch on time.

20. Trello (best for visual task management)

Trello uses boards, lists, and cards to organize tasks in a highly visual way. It’s simple, flexible, and perfect for small teams that want to manage campaigns, brainstorm ideas, or track workflows without overwhelming features.
Pricing: Free plan is available; paid plans start at $5/month per user.

21. Asana (best for structured workflows)‍

‍Asana is more than just a to-do list. It’s a collaboration tool that helps teams stay organized and finish big projects on time. You can use it to see how tasks connect (called dependencies), view everything on a clear timeline, and start new projects quickly with ready-made templates. This makes it perfect for marketing or creative teams that handle tons of campaigns and deadlines at once.

Asana integrates with more than 200 applications, including Google Workspace, Slack, and Microsoft Teams, eliminating the need to switch between different programs. 

You can add custom fields to track what matters most to your team, and use workload tools to see who’s busy and who has time to help. Automation saves time by handling small, repetitive jobs automatically. Plus, Asana now includes smart AI helpers that can spot delays, suggest next steps, and keep projects running smoothly.

Pricing: Free plan available; paid plans start at $10.99/month per user.

Tips to Get the Most Out of Marketing Tools

Using digital marketing tools effectively goes beyond just signing up. To maximize results, review analytics regularly and adjust strategies based on real data. Automate repetitive tasks like emails, scheduling, and reporting to free up more time for creativity and strategy. 

Combine tools for a full stack. For example, you can pair analytics with email automation or project management with social scheduling to create a more powerful marketing system.

At the end of the day, marketing tools are there to make life easier, not harder. Start small; choose two or three that address your biggest needs, like audience growth, time savings, or better content, and expand as you grow.

Looking for an all-in-one digital marketing solution built for creators? Mainstack lets you host digital products, track analytics, and manage engagement, all from one simple dashboard.