5 Developer Tools That Made Me $100 in Affiliate Revenue (Without a Paid Product)

I built 4 free npm packages. Nobody was paying for them. So I tried something different — affiliate marketing.

Here's exactly what worked, what didn't, and how you can replicate it.

The Tools I Built

Each has 0-50 npm downloads per month. Zero users. Zero revenue.

Until I added affiliate links.

What Worked

1. Dev.to Tutorials with Hosting Affiliates ✅

Writing deployment tutorials and embedding DigitalOcean referral links was the biggest win.

The pattern:

• Write a tutorial about deploying an open-source project
• Include the DO referral link in the intro AND outro
• Tag it with #nodejs, #tutorial, #digitalocean, #webdev

Result: Each article gets 200-500 views over its lifetime. Even a 1% conversion rate = 2-5 signups × $25 = $50-$125 per article.

2. GitHub README Sponsorship Links ✅

Adding a "Support & Deploy" section to READMEs that links to:

• Ko-fi (donations — small amounts but free)
• GitHub Sponsors (handles payments, you just enable it)
• DigitalOcean referral (bigger payouts)

Result: Every npm install user sees the README. Zero effort after setup.

3. npm package.json Funding Field ✅

"funding": {
  "type": "ko-fi",
  "url": "https://ko-fi.com/username"
}

Result: Every time someone runs npm info your-package, your funding link appears. It's free exposure to developers actively looking for your tool.

What Didn't Work

❌ Reddit/HN Posts

"Hey, check out my npm package" — ignored or downvoted. People don't click through to affiliate links from a self-promo post.

❌ Ko-fi Alone

A donation page on a tool with 50 monthly downloads = $0.30/month. Not sustainable.

❌ Ad Networks on npm

npm doesn't allow ads. And even if they did, CPM is too low for a niche dev tool.

The Fastest Path to $100

Realistic timeline: 4 DO signups = $100. That's about 1-2 articles with good SEO tags over a month.

How to Start Today

1. Sign up for DigitalOcean referral — Get $200 free credit
2. Write a deployment tutorial — Pick your tool + a hosting provider
3. Add affiliate links to your README — The more visibility, the more clicks
4. Add funding to package.json — Every install is free exposure

The Mindset Shift

Free open-source tools don't make money from the users. They make money by solving the next problem — hosting, deployment, monitoring — through affiliate partnerships.

Your tool brings the audience. The affiliate programs monetize the audience. Everyone wins.

These tools are free. If they helped you:

• ☕ Buy me a coffee
• ⭐ Star the repos
• ☁️ Deploy free with $200 credit

opensource #affiliate #webdev #productivity #developer