Concat – local open-source video editor

A local, open alternative behind CapCut's paywall

Problem

After gaining millions of users, CapCut moved features behind a paywall; many who just want basic editing and effects are forced to pay, worry about cloud uploads, and can't find a free local alternative that is extensible.

Solution

A browser/desktop editor that runs locally and runs all AI features on-device; MCP support lets agents drive editing workflows; filters, effects and templates are distributed decentrally so users can write and share their own; core editing, keying, and captions stay free.

Users

Content creators, short-video makers, privacy-conscious users

MVP

Local timeline editing and export; local AI keying/captions; simple filters and templates; decentralized template source; MCP interface exposing core operations.

Revenue

Open-core with paid cloud rendering, team collaboration and premium template packs; or sponsorship and commercial licensing

Why now

CapCut's paywall drives migration sentiment and local AI inference costs are dropping—indie devs can differentiate through open source and community templates