No. It’s free to use for the standard version with most features available for free. There’s a paid “studio” license which unlocks all the features. Neither have their source code available for the public.

Lol you will find out its not when trying to install it on Linux. They only support CentOS, which actually doesnt exist anymore, and there is nearly no info about needed things. A Flatpak? No way. Appimage? Dream on.