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The three open source CapCut alternatives getting the most attention on GitHub right now are Concat, OpenCut and OpenReel. They are at very different stages. Concat is a native desktop and mobile editor in beta that copies CapCut's feature list closely, including local auto-captions and text-to-speech. OpenReel runs in the browser today, with alpha desktop builds. OpenCut is the best known of the three by stars, but its main repository is being rewritten from scratch, and the version you can actually use is the older "classic" code.

Star counts and release versions are from GitHub on October 23, 2026.

Open Source CapCut Alternatives Compared

Concat OpenCut OpenReel
Repository jub0t/Concat OpenCut-app/OpenCut Augani/openreel-video
License AGPL-3.0 MIT MIT
GitHub stars (Oct 23) 10,857 95,756 5,432
Latest release v0.2.8 (Oct 20, 2026) No app release yet v1.0.0-alpha.17 (Aug 29, 2026)
Status Beta Rewrite in progress; classic version in use Browser editor live; desktop in alpha
Runs on Windows, macOS, Linux, Android; iOS and iPadOS by sideloading Classic: browser at opencut.app Browser at openreel.video; macOS, Windows, Linux desktop
Built with Native Rust engine, GPU compositor Rewrite: Rust core React, TypeScript, WebCodecs, WebGPU
AI features Local Whisper captions, local TTS and voice cloning, background removal Planned MCP server Bring-your-own-key AI Editor (OpenAI, Anthropic or compatible)
Agent control Built-in MCP server and JSON-RPC API Planned Editor API, MCP, headless mode MCP clients on desktop
Watermark None None stated None

Star counts measure attention, not editing quality. OpenCut's count was built up over more than a year, while Concat was created on August 25, 2026.

Concat: the closest match to CapCut

The Concat README calls it "the free, open-source, cross-platform CapCut replacement," and its feature list reads like CapCut's:

  • auto-captions with a local Whisper model, styled on the timeline
  • text-to-speech and voice cloning from a few seconds of recording
  • background removal for people or objects, or a hand-painted mask
  • keyframes for position, scale, rotation, opacity, volume and effect parameters, with a curve editor
  • 100 GPU-rendered effects, filters and transitions
  • multi-track and multi-timeline projects, a magnetic timeline option, titles and one-switch voice cleanup
  • export to H.264, HEVC or AV1, up to 4K 60 fps with 10-bit colour
  • 26 interface languages

The pitch is "no watermark, no account, no subscription, no upload." The AI models download once from Settings and then work offline, so footage stays on your disk. For automation, concat --mcp starts an MCP server for Claude and other agents, and there is a JSON-RPC API for scripts.

Caveats. The project is in beta, and the README says "it still has edges." Windows ARM builds are paused, and the Windows and macOS builds are unsigned, so SmartScreen and Gatekeeper will warn you. The AGPL-3.0 license matters if you plan to modify Concat and offer it as a network service; editing your own videos with it is not affected.

OpenCut describes itself as "a free and open source video editor for web, desktop, and mobile," and it has the most stars of the three. Its README is direct about the current state: "OpenCut is being rewritten from the ground up." The rewrite promises:

  • an Editor API and first-class third-party plugins
  • desktop, mobile and browser apps from one Rust codebase
  • an MCP server for AI agents
  • a headless mode for automation and batch rendering
  • a scripting tab in the editor

Until then, the README points users to opencut-classic as "the one to reach for today", and says opencut.app still runs that classic version. The rewrite lives at new.opencut.app until it is ready. On GitHub the classic repository is archived, and the main repository has no app release yet. The project is not taking outside contributions while the architecture is being designed.

Pick OpenCut if you want a no-install browser editor now and are happy to follow the rewrite. It is not yet the place for a native app or agent automation.

OpenReel: a browser editor with optional AI

OpenReel Video is "an open source video editor for the browser and desktop." You can open the editor at openreel.video with nothing to install, and core editing and rendering happen on your device. Its README lists:

  • trim, split, crop, ripple delete, speed changes, multi-track timelines, transitions and keyframes
  • caption styling, SRT import and animated titles
  • audio waveforms, fades, EQ, compression and ducking
  • colour wheels, curves, HSL controls and LUTs, plus masks and chroma key
  • landscape, portrait and square presets

Browser export covers MP4 with H.264 and WebM, with presets up to 4K; codec support depends on your browser and hardware. The desktop app uses native FFmpeg export and adds ProRes and transparency. The AI Editor is optional and uses your own OpenAI, Anthropic or compatible endpoint, so provider usage may cost money. Desktop builds are labelled alpha.

The README warns that browser storage can be cleared, so keep backups of project files and original media.

More open-source rankings: see which repositories are gaining stars today in the open-source rankings on AI Rank.

Which One Should You Use?

  • You want CapCut's features offline on a computer or Android phone: Concat. It is the only one of the three that lists local auto-captions, TTS and background removal.
  • You want to edit in a browser without installing anything: OpenReel, or OpenCut classic at opencut.app.
  • You want to build on an editor or wait for plugins and an Editor API: watch OpenCut's rewrite.
  • You want an AI agent to edit for you: Concat's MCP server works today; OpenReel's MCP support is desktop-only; OpenCut's is planned.

Whichever you try, test it on a copy of a real project before you rely on it. All three are early, and none claims full CapCut parity.

FAQ

Is there a fully open source CapCut alternative? Yes. Concat (AGPL-3.0), OpenCut (MIT) and OpenReel (MIT) all publish their source code on GitHub and add no export watermark.

Which one works offline? Concat runs fully locally once its AI models are downloaded. OpenReel's core editing also runs on your device, but its optional AI features need a network connection.

Is OpenCut dead? No. Its main repository is being rewritten, and the classic version still runs at opencut.app. The classic GitHub repository is archived.

Does any of them run on iPhone? Concat lists iOS and iPadOS, but only by sideloading. OpenCut plans mobile apps as part of its rewrite. OpenReel's README covers the browser and desktop only.

Keep exploring: track rising open-source AI projects in the open-source rankings on AI Rank.

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Sources

Prepared with automated editorial assistance and checked on October 23, 2026 against each project's GitHub repository, README and release list. No editor was installed or benchmarked.