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Home/Categories/Business & Productivity/Cap
icon of Cap

Cap

Open source alternative to Loom and Camtasia

  • 23.5K stars
  • AGPL-3.0
  • Active this week
  • Last commit 1 day ago

Last verified Oct 20, 2026

Cap is an open source screen recorder and async video messaging tool for macOS and Windows, with custom S3 bucket support to keep recordings in your own cloud storage. AGPL-3.0 licensed.

Visit websiteGitHub23.5K stars
image of Cap
TL;DR

Cap is an open source screen recorder and async video tool for teams that want a Loom alternative with more control over recording storage. It supports local desktop recording, share links, comments, and custom S3 storage for teams that do not want every video locked in a SaaS account.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
who it's for

Who Cap is for#

Founders sending product walkthroughs

Record quick demos for customers or teammates while keeping the option to store sensitive videos in your own cloud account.

Skip if:

Skip if your sales process depends on advanced viewer analytics and CRM integrations.

Product teams reviewing UI changes asynchronously

Cap can replace quick sync meetings with narrated screen recordings and comment threads.

Skip if:

Skip if your team already has a full video review and asset-management system.

the problem

The problem it solves#

Async video is useful for product walkthroughs, support replies, and internal updates, but hosted tools make recordings part of a vendor-controlled library. That creates cost, retention, and privacy concerns when videos include customer data, unreleased features, contracts, or internal dashboards.

Teams need the speed of Loom-style sharing without accepting that every recording must live on a third-party video platform.

how Cap solves it

How it solves it#

Screen and camera recording

Records product demos, walkthroughs, and async updates with desktop apps and shareable playback.

Custom S3 storage option

Lets teams store recordings in their own S3 bucket, reducing dependence on vendor-controlled video storage.

Comment and sharing workflow

Supports async review around shared videos so teams can discuss specific recordings without a live meeting.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Storage control is the key differentiatorCustom S3 support gives small teams a path to keep recordings under their own access controls while preserving the link-sharing workflow.
  • Open source codebaseThe public repository lets technical teams inspect how the recorder and web app work before trusting it with sensitive video.

Trade-offs

  • -Hosted polish may differ from LoomTeams that need mature enterprise video administration, broad integrations, and viewer analytics may find Loom more complete.
versus alternatives

Cap vs alternatives#

Cap vs Loom

Cap and Loom both support quick screen recording and async video sharing. Cap differentiates on open source code and custom S3 storage, while Loom offers a mature proprietary video workspace.

Cap is better when storage control and lower operating cost matter. Loom is still better when the organization needs polished enterprise administration, analytics, and integrations with no self-hosting work.

tech stack · detected from GitHub

What it's built on#

Languages
JavaScriptPythonRustTypeScript
Frameworks
Next.jsReactSolidJS
Databases
MySQL
frequently asked

FAQ#

Is Cap open source?

Cap publishes its source code on GitHub. The repository currently reports no SPDX license assertion in the synced GitHub metadata, so teams should verify license terms before commercial self-hosting.

Can Cap replace Loom?

Cap can replace Loom for screen recording, async sharing, and teams that want storage control. Loom remains stronger for mature hosted video workflows and enterprise integrations.

Does Cap support custom storage?

Yes. Cap documents custom S3 storage, which lets teams keep recordings in their own cloud bucket.

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