Platform information checked 2026-10-26. Select the provider package for Windows, macOS or Linux. Homebrew must already be installed for this macOS command. API access and authentication are separate from installing the app.
Build and inspect HTTP requests in a native desktop interface.
Free desktop HTTP client
Cartero is GPL-3.0-or-later software with no required client subscription. The API you contact can charge separately or require credentials. Its HTTP workflow supports REST, SOAP and XML-RPC; do not assume every Postman collaboration, testing or cloud-sync feature is included.
Send HTTP requests from a native desktop app and keep request definitions in plain, versionable TOML files. Visit the project website to check the currently available deployment options.
Release status
Public provider installation or download instructions reviewed; AltStack did not execute this software.
Install on your computer · Instructions checked 2026-10-26
Use Cartero’s official download instructions and choose the package for your operating system.
On macOS with Homebrew installed, the provider documents brew install --cask cartero. Linux and Windows have separate supported distribution routes.
Create an HTTP request with the method and URL for an API you are allowed to use.
Add only the headers and payload needed for that request, then inspect the returned status and response body.
Save the request as a .cartero file. Review variables and files for secrets before committing or sharing them.
Cartero is GPL-3.0-or-later software with no required client subscription. The API you contact can charge separately or require credentials. Its HTTP workflow supports REST, SOAP and XML-RPC; do not assume every Postman collaboration, testing or cloud-sync feature is included.
Self-hosting & quickstart specs
License
GPL-3.0
Deployment
Local desktop HTTP client
Free edition / costs
Free desktop HTTP client. Cartero is GPL-3.0-or-later software with no required client subscription. The API you contact can charge separately or require credentials. Its HTTP workflow supports REST, SOAP and XML-RPC; do not assume every Postman collaboration, testing or cloud-sync feature is included. Pricing evidence.
Devices / hardware
Select the provider package for Windows, macOS or Linux. Homebrew must already be installed for this macOS command. API access and authentication are separate from installing the app.
brew install --cask cartero
Documented 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.
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.
Fast, 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.