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Open source alternatives to Arc[006]

Arc is a Chromium browser built around a sidebar of tabs, spaces, split view and AI-assisted browsing features. Below are 6 self-hostable open source alternatives, ranked by GitHub popularity.

// EDITOR'S TAKE

zen-browser is the closest thing to Arc that you can use every day, with vertical tabs, workspaces and split view on top of Firefox. Flow chases the same design ideas but is far less mature, and Ladybird is fascinating as an independent engine written from scratch while being nowhere near ready as a primary browser.

// FREQUENTLY ASKED

What is the best open source Arc alternative?

Ladybird is the most popular open source Arc alternative by GitHub stars (63,207 stars). The other 5 options are ranked above.

Are these Arc alternatives self-hostable?

Yes — every project listed here is open source and runs on your own infrastructure. Click into a project to see its license, stars, language, and current health status.

Are they free?

All projects shown are free and open source. Check each project's license page for the terms — most are MIT, Apache 2.0, or AGPL.