Cap

The open source Loom alternative.
Cap.so »

Downloads for macOS & Windows

Cap is the open source alternative to Loom. It's a video messaging tool that allows you to record, edit and share videos in seconds.

Self Hosting

Cap Web is available to self-host using Docker or Railway, see our self-hosting docs to learn more. You can also use the button below to deploy Cap Web to Railway:

Cap Desktop can connect to your self-hosted Cap Web instance regardless of if you build it yourself or download from our website.

Monorepo App Architecture

We use a combination of Rust, React (Next.js), TypeScript, Tauri, Drizzle (ORM), MySQL, TailwindCSS throughout this Turborepo powered monorepo.

A note about database: The codebase is currently designed to work with MySQL only. MariaDB or other compatible databases might partially work but are not officially supported.

Apps:

• desktop: A Tauri (Rust) app, using SolidStart on the frontend.
• web: A Next.js web app.

Packages:

• ui: A React Shared component library.
• utils: A React Shared utility library.
• tsconfig: Shared tsconfig configurations used throughout the monorepo.
• database: A React and Drizzle ORM Shared database library.
• config: eslint configurations (includes eslint-config-next, eslint-config-prettier other configs used throughout the monorepo).

License:

Portions of this software are licensed as follows:

• All code residing in the cap-camera* and scap-* families of crates is licensed under the MIT License (see licenses/LICENSE-MIT).
• All third party components are licensed under the original license provided by the owner of the applicable component
• All other content not mentioned above is available under the AGPLv3 license as defined in LICENSE

Contributing

See CONTRIBUTING.md for more information. This guide is a work in progress, and is updated regularly as the app matures.

Analytics (Tinybird)

Cap uses Tinybird to ingest viewer telemetry for dashboards. The Tinybird admin token (TINYBIRD_ADMIN_TOKEN or TINYBIRD_TOKEN) must be available in your environment. Once the token is present you can:

• Provision the required data sources and materialized views via pnpm analytics:setup. This command installs the Tinybird CLI (if needed), runs tb login when a .tinyb credential file is missing, copies that credential into scripts/analytics/tinybird, and finally executes tb deploy --allow-destructive-operations --wait from that directory. It synchronizes the Tinybird workspace to the resources defined in scripts/analytics/tinybird, removing any other datasources/pipes in that workspace.
• Validate that the schema and materialized views match what the app expects via pnpm analytics:check.

Both commands target the workspace pointed to by TINYBIRD_HOST (defaults to https://api.tinybird.co). Make sure you are comfortable with the destructive nature of the deploy step before running analytics:setup.