Postman alternatives for indie devs: free & open-source API clients

The short answer

**Bruno** is the best Postman alternative for most developers — it's open source, stores collections as plain files on disk (no cloud sync required), and costs $0. **Insomnia** is best if you want a familiar Postman-like interface with cloud sync. **Hoppscotch** is best for quick testing directly in the browser.

Why leave Postman?

Postman's desktop app has become increasingly bloated, and their cloud sync requires an account. For indie developers who want lightweight, offline-first, or open-source tools, the alternatives are now better than Postman itself.

Comparison

When to choose each

**Bruno** — Best overall. Stores collections as plain files that live in your repo. Git-friendly, open source, no account needed.

**Insomnia** — Best if you want cloud sync and the most polished UI. Free tier is generous.

**Hoppscotch** — Best for quick, one-off API calls from the browser. No installation needed.

**Thunder Client** — Best if you already live in VS Code and don't want to switch apps.

The verdict

For indie devs, **Bruno** is the clear winner. Open source, git-native collection storage, and free forever.

About the author

Syed Muhammad Akbar Gillani is a full-stack developer and the founder of CheapStack and Mag Studios. He builds affordable developer tools and writes about bootstrapping products on realistic budgets. All pricing data in this guide was verified from public pricing pages and personal usage in July 2026.