Collaboration

Flowdock

Single platform for team communication & collaboration. Supports chat, mail inboxes & more. Free for small teams and students
www.flowdock.com free & paid options

Typetalk

Instant messaging app for teams. Available as a web app, mobile app and desktop app (Windows, Android, IOS & OSX)

Slack

Team communication platform. Free option includes unlimited users (however the feature set is limited on the free account). According to its home page , NASA’s Jet Propulsion Laboratory uses Slack.
slack.com free & paid options

HipChat

Team communication platform. Includes file sharing , group & private chats. Free option includes unlimited users (however the feature set is limited on the free plan)
www.hipchat.com free & paid options

Witkit

Secure team communication. Includes secure encrypted file storage.

Asana

Get more done with less effort. Get Teamwork done without email.

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