API Clients
Platform information checked 2026-10-26. Choose a provider desktop package, the public web app or the documented container. Desktop packages and container setup have different prerequisites. The macOS command requires an existing Homebrew installation.
Official app downloads and supported devicesInspect API requests and responses in a lightweight local-first workspace.
The MIT-licensed desktop and web client are free software. A self-hosted web instance uses your server resources; the API you call can have its own account, rate limits or charges. Keep request exports and credentials private. This is not an included Postman cloud-sync or paid API subscription.
Pricing checked .
Check official pricing
Test HTTP and socket requests in an offline-first web or desktop client with workspaces, environments and response history. A self-hosting option is recorded for this project. Review the official deployment instructions and maintenance requirements before running it yourself.
Public provider installation or download instructions reviewed; AltStack did not execute this software.
Availability checked 26 Oct 2026. Check the provider’s release or installation information
The MIT-licensed desktop and web client are free software. A self-hosted web instance uses your server resources; the API you call can have its own account, rate limits or charges. Keep request exports and credentials private. This is not an included Postman cloud-sync or paid API subscription.
brew install restfoxDocumented provider installation command for the stated platform and prerequisites. AltStack reviewed the instructions and did not run this command.
Documentation checked 2026-10-26; command not executed by AltStack.
Restfox provider setup documentationTechnologies recorded in the catalog snapshot.
Send API requests and organize development workflows through an accessible API client.
The Free API-testing plan costs USD 0. Business is USD 6/user/month and Enterprise USD 11/user/month, both billed annually on the observed cloud plan. Self-hosting and selected features have separate edition terms.
Keep API request collections alongside your code in a local-first API client.
The Open Source edition costs USD 0. Pro is USD 6/user/month and Ultimate USD 11/user/month when billed annually. Ultimate also offers a 14-day trial; a trial is separate from the permanent free edition.
Powerful API development and testing made effortless.
Essentials costs USD 0/user/month, with Git Sync up to three users and 1,000 mock requests/month. Pro is USD 12/user/month. Local-only Scratch Pad is free without login; mock-request add-ons and enterprise plans can add costs.
YaakProduct logo · See the interface on the official websiteFast, secure, offline API client with Git integration.
Yaak's provider binaries are free for personal use; the official pricing page requires a license when used at work. The source repository is MIT, which is distinct from the provider's binary purchase policy. Annual/lifetime billing and regional discounts vary, so no durable paid amount is asserted here.
Intercept, modify, and debug HTTP(S) requests effortlessly.
Requestly's AGPL repository has self-hosting/setup instructions. Its current hosted API Team offer lists USD 10/user/month billed annually and a 30-day trial. This check does not infer a continuing free hosted Team plan from that trial; enterprise components and infrastructure may cost extra.
Modern command-line HTTP client for the API era.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
