Open Source: Yes
Tor Browser Launcher is intended to make Tor Browser easier to install and use for GNU/Linux users. You install torbrowser-launcher from your distribution's package manager and it handles everything else.
Downloads and installs the most recent version of Tor Browser in your language and for your computer's architecture, or launches Tor Browser if it's already installed (Tor Browser will automatically update itself.
Verifies Tor Browser's signature for you, to ensure the version you downloaded was cryptographically signed by Tor developers and was not tampered with.
Adds "Tor Browser" and "Tor Browser Launcher Settings" application launcher to your desktop environment's menu.
Includes AppArmor profiles to make a Tor Browser compromise not as bad.