Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
| BrunoBruno is the Git-native API client for REST, GraphQL, gRPC and Websocket. | ReviewsNone yetWrite one for Bruno | Lowest paid plan$6per user per month, billed annuallyPro, as of November 13, 2026 | Free planYes | Free trial14 days | Public APINot confirmed | Runs onmacOS, Windows, Linux | Main features
|
| HoppscotchAn open-source API development ecosystem to create and test API requests. | ReviewsNone yetWrite one for Hoppscotch | Lowest paid plan$6per user per month, billed annuallyBusiness, as of November 13, 2026 | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onMac, Windows, Linux, Web, CLI | |
 InsomniaAn AI-native API collaboration platform with native Kong Konnect integration. | ReviewsNone yetWrite one for Insomnia | Lowest paid plan$12per user per monthPro, as of November 13, 2026 | Free planYes | Free trial14 days | Public APINot confirmed | ||
| MintlifySelf-updating documentation for startups, enterprises, and agents. | ReviewsNone yetWrite one for Mintlify | Lowest paid plan$450per month billed annuallyPro, as of October 28, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 PostmanGo faster from API development to production with higher accuracy and fewer tokens. | ReviewsNone yetWrite one for Postman | Lowest paid plan$9per month, billed annuallySolo, as of November 13, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 RapidAPI for MacA full-featured HTTP client to test and describe the APIs you build or consume. | ReviewsNone yetWrite one for RapidAPI for Mac | Lowest paid planNot confirmed | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onmacOS | Main features |
| ReadMeHelping you create docs that make your APIs easy to use and maintain. | ReviewsNone yetWrite one for ReadMe | Lowest paid plan$250per month, billed annuallyPro, as of October 28, 2026 | Free planYes | Free trialYes | Public APIYes | ||
 Thunder ClientA lightweight REST API client for VS Code and JetBrains. | ReviewsNone yetWrite one for Thunder Client | Lowest paid plan$3per user per month, billed annuallyStarter, as of November 14, 2026 | Free planYes | Free trial14 days | Public APINot confirmed |
From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
How this list is made
A tool is listed here only when we've confirmed on its own website that it has a free plan. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed