Best open-source alternatives to Loom

ShareX is a Windows-focused screen capture and file sharing utility aimed at users who need quick ways to grab, annotate, and distribute screenshots or other captured content. It also includes productivity-oriented tools that extend beyond basic capture, such as OCR, image effects, configurable actions, and custom upload destinations. The project appears to be a desktop application with a broad set of documentation pages covering keybinds, scrolling screenshots, command-line arguments, translation, and uploads to services such as Amazon S3, Google Cloud Storage, and Cloudflare R2. The README points users to the official website and store listings for downloads and further information, suggesting an end-user tool rather than a server application.

Cap is an open source screen recording platform positioned as an alternative to Loom. It is aimed at individuals and teams that want to record screens, cameras, and microphones, then turn those recordings into shareable videos with editing, captions, transcripts, analytics, and collaboration features. The project supports two main workflows: an instant mode that uploads while recording for quick sharing, and a studio mode that records locally and provides a fuller editing experience before export or sharing. It includes desktop apps for macOS and Windows, a web dashboard, and self-hosting options for teams that want control over storage, domains, and infrastructure. The repository also contains the web app, API, media services, CLI, and supporting packages used across the platform.