everything which helps you to communicate with your colleagues: * skype, google hangouts, webex, zoom for 1:1 and conference style video-calls * github/zenhub

everything which helps you to communicate with your colleagues: * skype, google hangouts, webex, zoom for 1:1 and conference style video-calls * github/zenhub and/or atlassian jira/confluence for scm/bugtracking/codereview/backlog/agile boards etc. especially: write comments to tickets and PRs (!) even if it often seems trivial. it helps documenting work-progess and keeps decisions for later reference. don't forget any kind of wiki for documentation * screensharing via ... screen/tmux or vnc, teamviewer or even some videochat - not skype because of its poor image quality - to do pair-programming * irc/slack/skype-chat/... - any kind of im for synchronous text-based chat * good old email for everything else :)