# ZapFast

> A native, lightweight WhatsApp client for Linux, macOS, and Windows.

- Website: https://zapfast.rocks
- Category: Other
- Launched on RankRoot: 2026-10-23
- Visitors sent by RankRoot: 0
- Show HN discussion: https://news.ycombinator.com/item?id=50212897

## About

ZapFast is an open-source, native WhatsApp desktop client built in Rust without a browser engine. It offers fast startup times, low memory usage, and background mode with system tray notifications. Users can link multiple WhatsApp numbers, send voice messages, and share various file attachments.

## Who it's for

Linux, macOS, and Windows users looking for a lightweight WhatsApp desktop client.

## Use cases

- Running WhatsApp with lower RAM usage compared to browser-based web clients
- Managing multiple WhatsApp numbers from a single desktop app window
- Sending and receiving voice messages and file attachments on desktop

## Features

- Built in Rust with egui and fastframe without a browser engine
- Voice message recording, playing, and seeking with OGG/Opus support
- File sharing for photos, GIFs, stickers, documents, polls, locations, and link previews
- Background mode with system tray integration and notifications
- Multi-account support for linking several WhatsApp numbers
- Custom color themes including light, dark, and system appearance

## FAQ

### What does ZapFast do?

ZapFast is a native WhatsApp client for Linux, macOS, and Windows that lets users chat, send voice messages, share files, and link multiple phone numbers.

### Who is ZapFast for?

ZapFast is for desktop users who want a lightweight alternative to WhatsApp Web that consumes less memory and starts up faster.

### How much does ZapFast cost?

ZapFast is an open-source project available for download.

### Is ZapFast open source?

Yes, ZapFast is MIT-licensed Rust software that links through whatsapp-rust.

### Does ZapFast support multiple accounts?

Yes, you can link more than one WhatsApp number and switch between them from your picture at the foot of the rail beside the chat list.


Source: https://getrankroot.com/launches/zapfast. Product facts come from the maker or the product's own website.