join.me is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try Jitsi or Chrome Remote Desktop. If that doesn't suit you, our users have ranked more than 100 alternatives to join.me and loads of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to join.me are AnyDesk (Free Personal), Zoom (Freemium), DWService (Free, Open Source) and NoMachine (Freemium).
Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.
DWService is an open source project which offers a service that allows access to remote systems (Windows, Mac, Linux, Raspberry...) using a standard web browser - without any component required on the client side.
Support customers on a remote computer easily through web-based, on-demand remote support sessions. Set up unattended remote access and manage remote PCs, laptops, mobile devices, and servers effortlessly.
TigerVNC is an advanced VNC implementation. It is based on the fourth generation of VNC. TigerVNC also includes features from the TightVNC and TurboVNC projects. This includes accelerated JPEG compression. TigerVNC supports the latest X.Org X server.