Best Self-Hosted API Development & Testing Tools in 2026

Tools for designing, testing, documenting, and managing APIs used by developers and engineering teams.

The top-rated pick is HTTPie with 38,407 GitHub stars.

2 self-hosted api development & testing tools — ranked by GitHub stars. Browse all

HTTPie

Open-source command-line and desktop HTTP client with intuitive syntax, JSON support, and built-in auth — a developer-friendly Postman alternative.

Alternative to:

Postman

Maxun

Open-source no-code platform for web scraping, crawling, search and AI data extraction.

Alternative to:

Firecrawl

Why self-host?

Self-hosting puts you in control. You own your data, avoid vendor lock-in, and eliminate recurring subscription costs. For teams handling sensitive data or operating under strict compliance requirements, running your own infrastructure is often the only viable option.