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Caspian

A calm, private desktop browser. Verified sites, blocking built into the engine, free on every desktop.

Personal2026 · Design and engineering
Caspian — cover

Caspian is a desktop browser built on a Chromium engine with Google's services stripped out — no accounts, no telemetry, no sync servers — shipped for Windows, macOS and Linux from one codebase. Ad and tracker blocking runs inside the engine itself, so a tracker never loads in the first place, and HTTPS-only, third-party cookie blocking and Global Privacy Control are on from the first launch rather than buried in settings.

Its distinguishing idea is verified sites: a curated list of genuine sites, signed with Ed25519, that puts a blue check in the address bar on the real thing and a purple one on government portals. A lookalike simply has no check. Around that sit the things people usually install extensions for — split view, coloured tab groups, a media player that streams torrents while they arrive, family controls behind a parent PIN, private windows, and signed background updates across stable, beta, alpha and dev channels.

Highlights

  • Ed25519-signed list of verified sites: blue check for the genuine article, purple for government
  • EasyList and EasyPrivacy blocking inside the engine, on from first launch
  • Split view, tab groups, media player with torrent streaming, family controls
  • Windows, macOS and Linux from one codebase, with four release channels