# 🟢 ZapFast — WhatsApp as a real Windows app instead of a browser tab

**URL:** <https://onehack.st/t/zapfast-whatsapp-as-a-real-windows-app-instead-of-a-browser-tab/326165>\
**Category:** Tools & Scripts\
**Tags:** tools, freebies, windows\
**Created:** [October 2, 2026, 11:46am UTC](https://onehack.st/t/zapfast-whatsapp-as-a-real-windows-app-instead-of-a-browser-tab/326165 "2026-10-02T11:46:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SRZ](https://onehack.st/user_avatar/onehack.st/srz/32/146132_2.png) [@SRZ](https://onehack.st/u/SRZ)\
**Post date:** [October 2, 2026, 11:46am UTC](https://onehack.st/t/zapfast-whatsapp-as-a-real-windows-app-instead-of-a-browser-tab/326165/1 "2026-10-02T11:46:11Z")

</div>

### 💬 Your WhatsApp, in its own window. 200 MB instead of a whole browser.

ZapFast — a native WhatsApp app for Windows, and it is open source

 ![ZapFast — your chats, in a native Windows app](https://onehack.st/uploads/default/original/3X/f/c/fc23a03938176527e7e332fea2cb1f19fe9708c3.jpeg)

🧱 **Why care** — WhatsApp in a tab runs a second browser engine on top of your browser, and it disappears the moment you close it.  
⚡ **Why it is fast** — opens in under a second and runs at about 200 MB, because there is no browser engine inside it at all.  
🔓 **Why you can trust it** — open source, MIT-licensed, with a SHA-256 published for every file on the release page.

| | WhatsApp in a tab | ZapFast |
| --- | --- | --- |
| Where it runs | inside your browser | its own window, its own tray icon |
| When the browser closes | the tab goes with it | keeps running in the tray |
| What it adds to memory | a second browser engine, on top of your browser | ~200 MB, no browser engine |
| Voice messages | play | play, seek, and record |
| Notifications | while the tab stays open | the chat picture · muted chats stay quiet |

**Windows — the one you want**

- [github.com/crmne/zapfast](https://github.com/crmne/zapfast/releases/latest) — the installer, 24 MB
- Scan the code once from your phone, exactly like WhatsApp in a tab
- It stays linked in the tray from then on

> **On macOS and Linux, and two lines worth knowing**
>
> **macOS** — `zapfast-v0.18.2-macos-universal.dmg`, 59 MB, same release page.  
> **Linux** — AppImage, `.deb`, `.rpm`, `.flatpak`, or a plain tarball.
> 
> **Two lines worth knowing.** The Windows installer is not code-signed yet, so Windows shows a one-time “unknown publisher” prompt — every release publishes the SHA-256 of each file, so the download can be confirmed before it is run. ZapFast is also an independent project: nothing to do with WhatsApp LLC or Meta.

Close the tab for good — your phone stays the main device.