Slack

Matrix

#matrix is the online open-source workplace inspired in sococo.com for distributed teams to have the experience of work together each day, side-by-side. No matter where team members might be. Working in an online workplace is even more productive when people are feeling in the same space.

Duckly

Talk and collaborate in real time with your team. Pair programming with IDE, terminal sharing, voice, video, and screen sharing. Free for small teams

Fleep

Internal chat and collaboration tool for development teams

Screen Sharing via Browser

Free screen sharing tool, share your screen with collabrators right from your browser, no download or registration needed. For free