Updated Hosts (markdown)

Hosts.md

@@ -1,4 +1,51 @@
-Tailscale on ...
+# Tailscale on ...
+
+## Primary operating systems
+
+The 5 primary platforms that Tailscale runs on are:
+
+* Linux
+  * https://pkgs.tailscale.com/stable/
+  * https://pkgs.tailscale.com/unstable/
+* Windows
+  * https://tailscale.com/kb/1022/install-windows
+* macOS
+  * Mac App Store: https://apps.apple.com/ca/app/tailscale/id1475387142?mt=12
+  * Why no DMG? https://tailscale.com/kb/1065/macos-package-dmg
+    * Homebrew status: https://github.com/tailscale/tailscale/issues/177
+    * Get a standalone ("DMG") working without Mac App Store: https://github.com/tailscale/tailscale/issues/718
+* iOS
+  * https://tailscale.com/kb/1020/install-ios
+  * App Store: https://apps.apple.com/us/app/tailscale/id1470499037?ls=1
+* Android
+  * Play Store: https://play.google.com/store/apps/details?id=com.tailscale.ipn&hl=en_US
+  * All open source: https://github.com/tailscale/tailscale-android
+
+
+## Other operating systems, distros
+
+* Alpine:
+  * works, but bug to make official package: https://github.com/tailscale/tailscale/issues/230
+* [Illumos](https://illumos.org/)
+  * works (code compiles, runs, we have active users)
+  * Blog post: https://blog.shalman.org/tailscale-for-illumos/
+* OpenBSD
+  * works (code compiles, runs, we have active users)
+* FreeBSD
+  * works (code compiles, runs, we have active users)
+* NetBSD
+  * should work, but might require slight tweaks in places, no active users
+
+## Hosted environments
+
+* Google Cloud Run
+  * you get root, but fake gVisor-sandboxed root, and TUN isn't available
+  * would require https://github.com/tailscale/tailscale/issues/707 to work
+* Google Colaboratory
+  * likewise, no TUN available
+  * would require https://github.com/tailscale/tailscale/issues/707 to work
+
+## Hardware
 
 * Raspberry Pi
   * works: https://pkgs.tailscale.com/unstable/#raspbian-buster
@@ -18,9 +65,9 @@ Tailscale on ...
   * subnet routing doesn't yet work: https://github.com/tailscale/tailscale/issues/451
 * QNAP NAS:
   * works: https://github.com/ivokub/tailscale-qpkg
-* Alpine:
-  * bug to make official package: https://github.com/tailscale/tailscale/issues/230
 
-Others: see [packaging label](https://github.com/tailscale/tailscale/labels/packaging)
+## Other
+
+Others: see [packaging label](https://github.com/tailscale/tailscale/labels/packaging).
 
 Something missing from this list? [File a bug](https://github.com/tailscale/tailscale/issues/new/choose) and let us know!