Version history & hashes

LastBrowser Release Archive

Published versions and available changelogs can be found here. Checksums are shown only for individually verified artifacts.

v0.1.59 · 2026-10-22

Published on October 22, 2026. The installer is significantly smaller (about 300 MB instead of about 610 MB) as model files are no longer bundled. Setup and Portable are signed with a Certum certificate; checksums see download page (SHA-256).

Setup / Portable · SHA-256 · GitHub release

v0.1.58 · 2026-10-17

Published on October 17, 2026. Beta update subscription with a notice about unsigned daily builds; release pipeline for the daily beta and stable channels; desktop build fix with pinned Python runtime dependencies for Sidekick. Setup and Portable are Authenticode-signed (Certum); checksums see SHA256SUMS.

Setup / Portable · SHA-256 · GitHub release

v0.1.55 · 2026-10-12

Published on October 12, 2026. Default chat can be stopped while starting; quick chat shows stop while searching models. Model catalogs are reused per profile and configuration. Known limitations: on first start a black area may appear until Ctrl+R; the signed build has not yet been accepted in the VM. An improvement in chat latency is not confirmed.

Setup / Portable · SHA-256 · GitHub release

v0.1.52 Beta

Earlier release
October 10, 2026
  • Fully Authenticode-signed (Certum SimplySign) and Google Widevine VMP-signed for streaming (Netflix / Spotify). 119 of 119 binaries verified.
  • Fixes drag-and-drop of pinned tabs, click events in the profile menu, identity retention for Google/OAuth logins and Windows long-path scans.
SHA-256 · Lastbrowser-0.1.52-x64-setup.exe · 161,228,424 bytes
D09747A3A5F55D9A4DA02A8644DE976D342EB2C811798B3778C242515F6BDACE

Download setup

SHA-256 · Lastbrowser-0.1.52-x64-portable.exe · 160,865,088 bytes
16EEC42D1D335112E90EC04A2AC66ACB2941A81A2D7DD229E35EAD7905C51BFF

Download portable

GitHub release v0.1.52

v0.1.47 TEST

Test prerelease
October 7, 2026

Separate pre-release version for isolated scans and tests.

GitHub test release v0.1.47

v0.1.45 Beta

Earlier version
October 5, 2026

Version 0.1.45 with compact composer, AUTO mode and isolated Spaces.

GitHub release v0.1.45

v0.1.44 Beta

Earlier version
October 3, 2026
  • This version was published from the earlier source state 86d7090b. The release contains four GitHub artifacts; file names, signatures and checksums will only be added here after our own root verification.
  • View GitHub release v0.1.44

v0.1.43 Beta

Earlier version
October 2, 2026
  • Earlier Windows version: v0.1.43 with fixed Alibaba workspace detection and unambiguous provider model selection.
  • Setup and Portable are Authenticode-signed; the SHA-256 checksums below come from the signed release files.
SHA-256 · Lastbrowser-0.1.43-x64-setup.exe 
FF5A8C6C9986BC34D8D781686644974F41624FDE1D24C4C0A8D1F5C872F1DE62
SHA-256 · Lastbrowser-0.1.43-x64-portable.exe 
DD94C2BFB654F840CE2EFA1FDF166399463892401BB3DF07D5B538A4139AFD56

Download setup · Download portable

v0.1.42 Beta

Earlier version
October 1, 2026
  • Previous Windows version: v0.1.42 with teamwork failover fix, more stable runtime reuse and improved access-auth display.
  • Setup and Portable are Authenticode-signed; the SHA-256 checksums below come from the signed release files.
SHA-256 · Lastbrowser-0.1.42-x64-setup.exe 
018C78449F9F7EC18A517367F07E3DDF8647DB0D63BBC693B886BF40BA5C42A4
SHA-256 · Lastbrowser-0.1.42-x64-portable.exe 
6433A38507800C0A84B815DD3C85DD9B6C058A42D2078103DB47861B03D83A16

Download setup · Download portable

v0.1.38 Beta

Earlier version
September 29, 2026
  • Previous Windows version: v0.1.38.
  • Setup and Portable are Authenticode-signed; the SHA-256 checksums below were matched against the published GitHub artifacts.
SHA-256 · Lastbrowser-0.1.38-x64-setup.exe 
E5BCB2AF721829D0BE9FD85E224F339D1F3757BC4741CB1B87CBAB248423CB17
SHA-256 · Lastbrowser-0.1.38-x64-portable.exe 
80E6FB63197E324731A7E2A2D658EC09BA4FFDF61F0C03B13105E6D54603E9B2

Download setup · Download portable

v0.1.33 Beta

September 18, 2026
  • ConPTY Windows pseudo-terminal: first native terminal drawer in the browser sidebar with Ctrl+`.
  • Split-screen polish: 70/30 split-view rendering and improved keyboard focus.
  • Tab intelligence: automatic unloading of inactive tabs to save RAM.
SHA-256 checksum (Lastbrowser-Setup-0.1.33.exe · 93.8 MB) 
7c2e5a8f1b4d7e0c3a6f9b2d5e8a1c4b7e4a9c8b7e2f1d0a5e8c3b6f9a1d4e7b

v0.1.32 Beta

September 6, 2026
  • Sidekick provider integrations: configurable external providers and local Ollama models.
  • Ollama local LLM support: local, offline-capable model execution.
  • Windows DPAPI encryption: local encryption of all credentials and tokens.
SHA-256 checksum (Lastbrowser-Setup-0.1.32.exe · 91.5 MB) 
5e8a1c4b7e4a9c8b7e2f1d0a5e8c3b6f9a1d4e7b0c2e5a8f1b4d7e0c3a6f9b2d

v0.1.31 & v0.1.30 Alpha

August 2026

Initial alpha launch of the Win32 Electron shell with vertical sidebar, basic Chrome MV3 extension support and zero-telemetry architecture.