I Paid $30/Month for API Testing. Then Found These Free Tools.
Postman is overkill for what most developers actually need. Here's what I use instead.
The Postman Trap
I was paying $30/month for Postman for:
- Sending HTTP requests
- Testing REST APIs
- Simple environment variables
That's $360/year for what amounts to "curl with a GUI."
I kept telling myself the team features justified it. Collections. Shared workspaces. Monitoring.
Then I actually looked at what I was using.
What I Actually Use
Insomnia (Free + Open Source)
Insomnia handles everything I need:
- REST and GraphQL requests
- Environment variables
- Code generation (cURL, Python, JavaScript)
- Plugin system
The UI is cleaner than Postman. The open source model means no subscription.
Cost: $0
Bruno (Free + Open Source)
Bruno is a newer entrant — git-friendly API clients where your collections are just folders of text files. Unlike Postman's cloud sync, your API collections live in your repo.
Perfect for teams that want version control for API definitions.
Cost: $0
HTTPie (Free)
Command line. When I need to test an API quickly and don't want to open a GUI, HTTPie does:
http POST https://api.example.com/users name="Test" email="test@example.com"
Cleaner output than curl. Fully scriptable.
Cost: $0
RapidAPI (Free Tier)
For testing third-party APIs, RapidAPI's marketplace has free tiers for most popular APIs. Rather than signing up for each service individually, one account.
Cost: $0
What Postman Still Does Better
I'll be fair:
- Team collaboration — Postman's shared workspaces are genuinely useful for teams
- API monitoring — Scheduled collection runs with alerts
- Mock servers — Built-in mock API for frontend development
- Enterprise SSO — If you need SAML/OIDC
If you're a team, Postman might be worth it. For solo developers: not at $30/month.
The Numbers
| Tool | Monthly Cost | Best For |
|---|---|---|
| Postman | $30 | Teams needing collaboration |
| Insomnia | $0 | Solo developers |
| Bruno | $0 | Git-based workflows |
| HTTPie | $0 | CLI-first developers |
| RapidAPI | $0 | Third-party API testing |
What I'd Do Differently
Start with Insomnia. If you need the team features, Postman team plans start at $12/user/month — still cheaper than the $30 individual plan, and you get actual collaboration.
The $30/month I was paying was for features I never used.
What API client do you use? Still on Postman or switched to something free?
For developers thinking about their full toolchain, Frase.io helps understand what questions your users are actually asking about your tools.
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