We built a terminal-only Bluesky / AT Proto client written in Fortran

In plain words

This is a terminal-based client for Bluesky and the AT Protocol, built using Fortran. It allows users to interact with Bluesky's decentralized social network from the command line. The project is notable for choosing Fortran, a language primarily associated with scientific computing, as its implementation language rather than modern alternatives. The code is available on GitHub for developers interested in exploring this unconventional approach to building social media clients.

written from the facts on this page · September 2026

From the sources

A terminal-only Bluesky / AT Proto client written in Fortran, with an asm/Rust native firehose decoder for the relay-raw stream. Dither image composer. DM slide support. Yes, that Fortran. On Tangled too! - FormerLab/fortransky

A terminal-only Bluesky / AT Protocol client written in Fortran. Posts, timelines, notifications, dithered image posting, DMs, and terminal image rendering — all from an amber terminal (if you run it in cool-retro-term), all the way down to the protocol Fortran TUI (src/) └─ C libcurl bridge (cshim/) └─ Fortran iso_c_binding module (src/atproto/firehose_bridge.f90) └─ Rust staticlib (bridge/firehose-bridge/) envelope → CAR → DAG-CBOR → NormalizedEvent → JSONL relay-raw stream path: relay_raw_tail.py └─ assemblersky_cli (bridge/assemblersky/bin/) ← x86-64 assembly decoder └─ firehose_bridge_cli (bridge/firehose-bridge/target/release/) ← Rust fallback └─ Python cbor2 ← live stream decode…from github.com

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