

About
Concat is a free, open-source video editor and a CapCut alternative for macOS, Windows, Linux and Android. It covers what people actually open CapCut for: auto-captions, text-to-speech, background removal, keyframe animation, effects and titles, multi-track cutting, 4K export. With none of the catches: no watermark, no account, no subscription, no upload.
Everything runs locally on a native Rust engine with a GPU compositor. Install it, drop in footage, cut. The AI models for captions, voices and cutout download once from Settings and work offline after that. Your footage never leaves your disk.
Good for: TikTok, Reels and Shorts, YouTube videos, tutorials and screen recordings, podcast clips, memes.
Also for machines: a JSON-RPC API, so scripts and AI agents can cut video with it too.
Highlights
No watermarks. No account. No paywall. Ever.
100% local. Nothing uploads. Works offline.
Auto-captions. Local Whisper. Pick a model size, get styled captions on the timeline.
Text-to-speech + voice cloning. Free local voices, or any voice from a few seconds of a recording.
Background removal. People, objects, or paint the mask yourself.
Keyframes. Position, scale, rotation, opacity, volume, effect parameters. Curve editor built in.
100 effects, filters and transitions. GPU-rendered, live in the preview.
Cut fast. Split, trim, ripple, merge, freeze frame, speed. Magnetic timeline if you want it.
Multi-track, multi-timeline. Several cuts in one project. Blend modes, crop, flips.
Titles. Fonts, stroke, shadow, background plate. Presets to start from.
One-switch voice cleanup. Denoise, enhance voice, level the loudness. Plus chipmunk, robot, telephone and friends.
Export. H.264, HEVC, AV1. Up to 4K 60, 10-bit colour.
Native Rust engine. GPU compositor, proxies, hardware decode. 4K scrubs smoothly.
Scriptable. A JSON-RPC API that scripts and AI agents can cut video with. A build from source adds gRPC and a command-line tool.
macOS, Windows, Linux, Android. 25 languages. Same app, same project files.DOWNLOAD LINKS
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Credits: GITHUB
~bunnyapps
