Saros brings multi-writer synchronous distributed editing to the Eclipse IDE, e.g. for joint code reviews, explaining code remotely, or distributed pair programming -- all also for more than 2 participants; we call this Distributed Party Programming. It includes refined awareness functionality, text chat, and a simple distributed whiteboard/sketching facility.
Eclipse Update Site: https://www.saros-project.org/update-site/eclipse
MeetingPoint is a modular cross-browser realtime collaboration and conferencing environment. It provides Flash web meeting with audio/video conference, shared whiteboard and slideshow presentation, chat, polls, etc. Full Moodle integration.
HiveBoard is an open source shared graphical whiteboard application that is targeted at professional meetings. It includes interactive chat. It is written in Java and requires a Servlet Container (eg jakarta Tomcat) and a DBMS (eg MySQL) for the server.
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.