API Testing
An honest comparison to help you pick the right api testing tool in 2026.
| Feature | Hoppscotch | Thunder Client |
|---|---|---|
| Category | API Testing | API Testing |
| Free Tier | Yes | Yes |
| Paid Plan | $0 | $3/mo |
| Enterprise | Self-hosted | Custom |
| Best For | Developers who want a fast, free, browser-based API testing tool without Postman's bloat | Developers who want to test APIs inside VS Code without switching to a separate desktop app |
| Feature 1 | Browser-based | Native VS Code extension |
| Feature 2 | Open source | Collections & environments |
| Feature 3 | WebSocket testing | Scriptless testing |
| Feature 4 | Real-time | Git-syncable collections |
| Feature 5 | Team workspaces | Lightweight |
| Website | Hoppscotch | Thunder Client |
Hoppscotch and Thunder Client are both popular choices in the api testing category, but they serve different types of developers. Hoppscotch is open-source, lightweight API development tool that runs in the browser with real-time WebSocket testing and team features. Meanwhile, Thunder Client is lightweight API client built directly into VS Code, with collections, environments, and scripting without leaving the editor.
Both tools offer free tiers, which means you can try each one before committing. Hoppscotch's paid plan starts at $0, while Thunder Client's starts at $3/mo.
Hoppscotch stands out with Browser-based and Open source, while Thunder Client differentiates itself through Native VS Code extension and Collections & environments. The right choice depends on which capabilities matter most for your workflow. Ultimately, developers who want a fast, free, browser-based API testing tool without Postman's bloat, while Thunder Client is best for developers who want to test APIs inside VS Code without switching to a separate desktop app.
Hoppscotch: Free tier available. Paid plans start at $0. Enterprise pricing: Self-hosted.
Thunder Client: Free tier available. Paid plans start at $3/mo. Enterprise pricing: Custom.
Choose Hoppscotch if you value browser-based and open source. Go with Thunder Client if developers who want to test APIs inside VS Code without switching to a separate desktop app. Both are solid api testing options in 2026 — the best pick depends on your team size, budget, and technical requirements. We recommend trying both (especially if they have free tiers) before committing to one.
Not sold on either Hoppscotch or Thunder Client? Check out these other api testing tools:
See all Hoppscotch alternatives or Thunder Client alternatives.
Read more about api testing on our Vibe Coding page.
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