Ain is a HTTP API client for the terminal.

Yes. Ain is open source under the MIT licence. Its source code is on GitHub at jonaslu/ain and is written mainly in Go.

Yes. Ain is open source, so the software itself is free to use.

Yes. Ain can be self-hosted on your own server or infrastructure.

What is Ain an alternative to?

Ain is an open-source alternative to Postman. Other open-source alternatives to Postman include Hoppscotch, Bruno and Insomnia.

Is Ain actively maintained?

The most recent commit to Ain was on 17 October 2025, and the latest release is v1.6.0, published on 21 January 2025. The project has 620 stars on GitHub.

Ain: open-source alternative to Postman

About Ain

A HTTP API client for the terminal

Built with: Go tools
Tags: api; api-client; api-rest; terminal; curl; httpie; go; postman; paw; insomnia; http

Ain: questions and answers

What is Ain?: Ain is a HTTP API client for the terminal.
Is Ain open source?: Yes. Ain is open source under the MIT licence. Its source code is on GitHub at jonaslu/ain and is written mainly in Go.
Is Ain free?: Yes. Ain is open source, so the software itself is free to use.
Can I self-host Ain?: Yes. Ain can be self-hosted on your own server or infrastructure.
What is Ain an alternative to?: Ain is an open-source alternative to Postman. Other open-source alternatives to Postman include Hoppscotch, Bruno and Insomnia.
Is Ain actively maintained?: The most recent commit to Ain was on 17 October 2025, and the latest release is v1.6.0, published on 21 January 2025. The project has 620 stars on GitHub.