✦ Official Windows Release · Version 0.1.32 Beta · EV Code-Signed

Download Lastbrowser.

The AI-native Chromium browser for Windows 10 & 11 with Nova AI, 100% per-space session isolation, and Castlabs Widevine DRM. Choose your preferred package.

Recommended for Most Users

Windows Installer (Setup)

Version 0.1.32 · x64 · 192.6 MB · Windows 10/11
  • ✓ Full installation with Desktop & Start Menu shortcuts
  • ✓ Seamless background auto-updates (electron-updater)
  • ✓ Can be registered as default Windows browser (HTTP/HTTPS)
  • ✓ Fully Authenticode & EV signed (Dominik Rainer)
Download Installer (.exe)
SHA-256 Checksum (Setup.exe): BBD68764AE9C7CE7B78B5748BAA15294369384EBBB524FA486B5D16B2C967CBA
Standalone · Zero Installation

Portable Edition

Version 0.1.32 · x64 · 192.2 MB · Windows 10/11
  • ✓ Run directly without admin privileges or installation
  • ✓ Perfect for USB thumb drives, enterprise PCs, or quick testing
  • ✓ Leaves zero footprint in the Windows Registry
  • ✓ Full feature parity (Nova AI, Spaces & Widevine DRM)
Download Portable Edition (.exe)
SHA-256 Checksum (Portable.exe): DC2EBF0138EAD02B7D758FC0D8970DA8B140593D7178177179A7EE2B28DE91FB
🛡️

Cryptographically Signed (Extended Validation)

All Lastbrowser binaries are digitally signed and timestamped using an official Extended Validation (EV) Code Signing Certificate issued to Dominik Rainer (Certum CA).
Note on Windows SmartScreen: For brand new software releases, Windows Defender SmartScreen gradually builds up reputation metrics. If you see the blue “Windows protected your PC” dialog, simply click “More info” followed by “Run anyway”. The download is 100% clean and free from any malware.

Up and running in 3 simple steps

1

Download & Launch

Download the installer or portable executable and launch Lastbrowser with a double click.

2

Configure Your AI

In the welcome setup, choose your assistant's name (Nova, Jarvis, etc.) and personality mentality (Pragmatic, Inquisitive, Technical, or Visionary).

3

Multitask with Spaces

Organize separate Spaces for Work, Personal, and Research. All logins and cookies remain strictly isolated.

System Requirements & Architecture

Operating System

Windows 10 (Build 17763+) or Windows 11 (64-bit)

System Memory

4 GB RAM minimum (8 GB recommended for multi-agent workflows)

Storage Footprint

approx. 600 MB free disk space (includes embedded Python AI runtime)

Chromium Engine

Chromium 138 (Castlabs Electron 37 + VMP Widevine)