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ATAC

Terminal-based API client inspired by Postman

Developer Tools & Git ★ 3.7k stars Easy setup MIT

ATAC is an open-source terminal user interface API client that lets developers test HTTP APIs without leaving the console. Collections are stored as plain files so they can be version controlled and self-managed.

Official siteSource code

Key features

  • Terminal UI client
  • Postman import support
  • Git-friendly collections
  • Offline operation

Strengths

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • Active community (3.7k GitHub stars)
  • Written in Rust

Is ATAC secure?

OSV.dev has no published security advisories for ATAC's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

ATAC replaces

Self-hosted Postman alternativesSelf-hosted Insomnia alternatives

Health badge

Maintain ATAC? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 88 · excellent

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.. image:: https://selfhostindex.com/badge/atac-tui.svg
   :alt: SelfHostIndex health score for ATAC
   :target: https://selfhostindex.com/app/atac-tui/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare ATAC

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