Zapfast
Zapfast is a free, open-source chat app for Windows, macOS and Linux. ZapFast: a fast, native WhatsApp client in Rust and egui. It has 1,692 GitHub stars and is released under the MIT license. Its source code is on GitHub at crmne/zapfast.
- Linux
- macOS
- Windows
- Chat & communication
- Actively maintained
About Zapfast
WhatsApp, native and fast. ZapFast is a WhatsApp client for Linux, macOS, and Windows, written in Rust with egui and whatsapp-rust. It links to your phone as a companion device and has no browser engine. In our Linux test it opens in under a second and uses about 200 MB of idle RAM, against 1.13 GB for WhatsApp Web. See the measurements.
Install Zapfast
Package names found in the project's README. Each links to its package page so you can check the publisher first.
brew install --cask crmneAUR (Arch Linux)
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What is Zapfast?
Zapfast is a free, open-source chat app for Windows, macOS and Linux. ZapFast: a fast, native WhatsApp client in Rust and egui. It has 1,692 GitHub stars and is released under the MIT license. Its source code is on GitHub at crmne/zapfast.
Is Zapfast free and open source?
Yes. Zapfast's source code is public on GitHub under the MIT license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Zapfast?
Homebrew: brew install --cask crmne and the AUR package zapfast-bin. The commands are on this page. Installers are also on its GitHub Releases page (latest: v0.19.0).
Is Zapfast still maintained?
The repository's most recent commit was on Oct 6, 2026. appsgit only lists apps whose repository had a commit in the last six months.