Concat is a free, open-source CapCut alternative in Rust that runs on-device and reached 2,987 stars in 30 days

A developer publishing under the handle jub0t pushed Concat to GitHub on 25 August and it stands at 2,987 stars and 267 forks 26 days later, according to the GitHub REST API. The project is an AGPL-3.0 licensed video editor written in Rust, positioned by its own README as a free, open-source replacement for CapCut, ByteDance's consumer video editor.

Captions and voices run on the device

The Concat website lists multi-track editing with split, trim, merge, transitions and speed control, plus animated text and titles, voice filters and reusable templates. The build ships for Windows on x64 and ARM64, macOS on Apple Silicon and Intel, Linux as AppImage, deb and rpm, Android as an APK, and an iOS IPA in beta. Installer sizes on the release page run from 45 MB to 126 MB.

Two features run on the device. The project describes auto-captions as offline transcription "performed on the user's machine", and its text-to-speech uses local voices with no cloud call. The GitHub description also mentions MCP support, which the website does not repeat.

Version 0.2.3 shipped yesterday

The v0.2.3 release was published on 19 September at 18:56 UTC and self-describes as "a self-contained build for every platform Concat ships on". The changelog is a list of small editor details rather than headline features: waveforms drawn with a bar every four pixels, the part over minus 6 dBFS coloured amber, the razor tool removed in favour of a single split at the playhead, denser candles on the lanes, and text preset cards standardised to one sample size. The release is marked stable on GitHub, with the pre-release flag off.

Free video editors already exist. What is unusual here is the combination: an on-device native build in Rust, an install with no account, an AGPL licence that keeps forks open, and cross-platform coverage from ARM Windows through iOS. The project's own claim that "nothing leaves your machine" is a specific one for review clips, screen captures and product demos that a team might not want to upload.

The traction number is concrete: 2,987 stars on a repository that was created 26 days ago, with a public commit history that starts on 25 August. Whether it holds up on long editing sessions is a separate question the release notes do not answer, so treat it as a fresh install worth trying on a real project before you route any pipeline through it.

Source

Primary: jub0t/Concat on GitHub and the v0.2.3 release notes. Repository metadata pulled from the GitHub REST API at 16:00 UTC on 20 September.