This article was originally published on AI Study Room . For the full version with working code examples and related articles, visit the original post. Best API Testing Tools 2026: Postman vs Insomnia vs Bruno vs Hurl API testing tools range from GUI-heavy collaboration platforms to CLI-native text-based testers. Postman, Insomnia, Bruno, and Hurl each serve different workflows. Here's which one matches how you develop and test APIs. Quick Comparison Postman Insomnia Bruno Hurl Type GUI + cloud sync GUI + local/cloud GUI + Git-native (files) Storage Postman Cloud Local or Insomnia Cloud Local files (plain text) Version control Postman workspaces Git sync (collections) Git-native (folder of files) Collaboration Excellent (workspaces, comments) Good (Insomnia Cloud) Via Git (PR reviews) Free tier Limited (3 collaborators) Generous (local + git) Open source (MIT) GraphQL Yes Excellent (native) Yes gRPC Yes (beta) Yes No Scripting JavaScript (pre/post scripts) Plugins (JS) Scripting (JS) CI/CD integration Newman…