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Dev tools · May 2, 2026

Flux — Local

Postman alternative

What it does

Flux is a fast, local-first API client. No account, no cloud, no telemetry. Your collections live as plain JSON — commit them, sync them, own them.

Does a similar job

all alternatives →
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  • FA
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    Hi HN, I have been experimenting with a messaging protocol called FLUX. The goal is to explore what email might look like if it was designed today instead of in the 1980s. FLUX tries to simplify a few things that feel complicated in the current email stack. Identity is based on cryptographic keys instead of usernames and passwords. Messages are signed and verified automatically. The transport is real time and does not depend on the traditional SMTP relay model. The current implementation is small and meant as a prototype. The whole server is only a few hundred lines of Python so the protocol…

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