ApiArk – Lightweight Local-First API Client

Postman is bloated (800MB RAM), requires login, and stores credentials in the cloud. ApiArk is a lightweight desktop API client built with Rust/Tauri that stores everything locally as Git-friendly YAML files with no login required. Target users are developers who want fast, privacy-respecting API testing without cloud dependencies.

Postman fatigue is real and measurable — the r/webdev and r/programming complaints about mandatory login and cloud sync have been consistent since Postman's 2022 forced-login rollout, and Hoppscotch, Bruno, and the now-archived Insomnia fork all saw adoption spikes directly after that decision. Bruno is the closest competitor and is open-source with a near-identical local-file pitch, which is the central problem here: the space already has a credible free incumbent that solved the same core pain point. The $2k–10k/mo revenue band is plausible only with a paid tier built around team features or enterprise self-hosted sync, since solo developers in this segment have a strong expectation of free tools. The most likely failure mode is building something technically solid that Bruno's existing community and GitHub stars make irrelevant before it reaches its first hundred paying users.