Sadly there is no other FOSS out there that combines remote support with good NAT traversal. Existing remote access tools such e.g. VNC all do not offer NAT traversal and are incredibly hard to setup. All FOSS web/phone conference tools offering screen sharing refuse to implement transferring Cursor/Keyboard control. Probably because it is not so easy, but mostly, I guess, out if fear for diffuse security problems.
Too bad people then will be compelled to use this absolute mess...
The tool itself is open core: https://github.com/gravitational/teleport
Most of the desktop access stuff is open source. (The only desktop related thing that's proprietary is our tool that allows for access to machines not connected to Active Directory). A sizeable chunk of the desktop access code is even Written In Rust™: https://github.com/gravitational/teleport/tree/master/lib/sr...!
Do you have any links to issues/interactions you find concerning? I've been evaluating different remote desktop tools recently and I'd certainly like to know about any other red flags.
Furthermore they seem to share servers with what seems like an unrelated ecommerce website: https://github.com/rustdesk/rustdesk/issues/2712
It doesn't seem like they take security all that seriously.
not to criticize your answer, i just have not found any viable alternative that is free to use for all use cases.