Download Caspian

Stable 0.1.5, published Sep 13, 2026. Free, no account needed.

Windows 10 / 11

0.1.5 · 138 MB

SHA-256

3e88b48473d313ff8e05e078e227db856082f8cadc5797437d0c67f33be879fc

macOS 12 Monterey or later

0.1.5 · 133 MB

SHA-256

302730dad9a1fab29bcf2ff39e980e245dc00e3c15467beb1e99e64a07e8184e

Any current distro · AppImage

Coming soon

Not published on this channel yet.

Coming soon

The same verified-site badges, ad blocking and family controls, on your phone.

Coming soon

The same verified-site badges, ad blocking and family controls, on your phone.

What's new in 0.1.5

Sep 13, 2026

Keel: Caspian's own engine build. Pages run at the display's refresh rate — 120 fps scrolling and animation on ProMotion and high-refresh monitors, where the stock engine was pinned to 60 — with H.264 / AAC / HEVC built in on every platform and the Hunspell spellchecker everywhere.

Arrow, Home/End, Page Up/Down, Insert and Delete keys from a physical keyboard reached pages with the numpad's `event.code` (ArrowUp arrived as "Numpad8"), so sites that check `event.code` — game controls, keyboard shortcuts, easter eggs — never saw them. They now report the same codes as Chrome; the numpad still reports as the numpad.
Google Search crashed the page while signed in (a blank tab that ignored the keyboard, sometimes with a stray "doesn't support a secure connection" bar). Google serves browsers it doesn't recognise a page variant that crashes this engine; Caspian now presents exactly as Chrome, as Brave and Vivaldi do. Caspian's own services still know it's Caspian.
A page whose process dies shows "This page crashed" with Try again, instead of a blank tab.
macOS: page thumbnails come from the web view's framebuffer, so there is no half-second stall after every load and tab switch; the ⋮ menu opens in the right place the first time.

Caspian checks its channel every few hours and installs updates in the background. Switch channels from caspian:about.

Channel	Version	Windows	macOS	Linux
stable Tested releases. What most people should run.	0.1.5 Sep 13, 2026	138 MB64-bit	133 MBApple silicon	—
beta Next release, a few weeks early. Mostly smooth.	Nothing published	—	—	—
alpha New features as they land. Expect rough edges.	Nothing published	—	—	—
dev Straight from main. For people fixing it.	0.1.4 Sep 13, 2026	138 MB64-bit	—	—

Run the installer. It sets up per-user, offers to become the default browser, and updates itself from then on.

Open the .dmg and drag Caspian to Applications. Caspian offers to become the default browser on first run and updates itself from then on.

Make the AppImage executable and run it. It works on any current distro with no packages to install.

Builds are signed and their SHA-256 is published with each release. Manifests: stable/latest.json