Best API Testing Tools Compared: Postman vs Insomnia vs Bruno (2025)

API testing tools are developer-critical infrastructure. You use them dozens of times a day. Choosing the wrong one creates friction that compounds constantly — slow startup, poor collection management, forced cloud sync, or subscription paywalls blocking features you need. In 2025, the landscape shifted significantly. Postman went hard on cloud collaboration (and monetization). Insomnia had a controversial ownership change. Bruno emerged as a git-native open-source alternative that's rapidly gaining adoption. This is an honest comparison of all three — features, pricing, team collaboration, and which fits which use case. Quick Verdict Postman Insomnia Bruno Best for Large teams, complex API workflows Mid-size teams, REST/GraphQL Solo devs, git-based workflows Pricing Freemium (features limited) Freemium (was better before Kong) Free, open-source Collection storage Cloud-first Cloud or local Local files only (git-native) Git integration Export/import Limited Native — collections ARE fi