GoKawiilZapFast launches as native Rust-based WhatsApp desktop client
ZapFast is a new WhatsApp client built in Rust using egui and the fastframe framework, designed for Linux, macOS and Windows without a browser engine. It connects to a phone as a companion device via whatsapp-rust, supports multiple linked numbers, encrypted local chat storage, and interface translations in ten languages.
GoKawiil's interpretation of the reporting above, not reported fact.
The developers report it opens in under a second and uses roughly 200 MB of idle RAM versus 1.13 GB for WhatsApp Web, suggesting a lighter-weight alternative for users who find browser-based or Electron clients resource-heavy. Its availability through package managers like Homebrew and AUR could make it easier for developers and privacy-conscious users to adopt, though its long-term reliability depends on how well it keeps pace with WhatsApp's official protocol changes.
- ZapFast is a native WhatsApp client built with Rust and egui, avoiding browser engines entirely.
- It claims much lower memory use and faster startup than WhatsApp Web in Linux testing.
- Features include multi-number support, encrypted local chat history, and privacy locks, with no data sent to the developers' servers.
Source: github.com, 2026-11-08
Published there as: “ZapFast: A fast, native WhatsApp client in Rust and egui”
Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.