Mattermost https://www.mattermost.org/
Zulip
Zulip https://zulip.org/
New in owncloud 9.1 | ownCloud.org
ownCloud is an open source, self-hosted file sync and share app platform. Access & sync your files, contacts, calendars & bookmarks across your devices. You decide what happens with your data, where it is and who can access it!
Source: New in owncloud 9.1 | ownCloud.org
This update adds 2FA for better authentication, collaborative doc editing with Collabora Online, and improvements in scalability and federation. No mention of NextCloud fork.
Managing apps for your team – Slack Help Center
By default, all members can add apps to a Slack team. Team Owners and Administrators have the option of limiting who can add and approve apps, and can manage which ones are accessible at the team level.
Home | Matrix.org
Rabb.it shared browser lets you chat over movies—or e-books – TeleRead News: E-books, publishing, tech and beyond
Rabb.it shared browser lets you chat over movies—or e-books – TeleRead News: E-books, publishing, tech and beyond http://www.teleread.com/rabb-it-shared-browser-lets-you-chat-over-movies-or-e-books/
Jupyter Notebook 4.2
Jupyter Notebook 4.2 https://blog.jupyter.org/2016/04/15/notebook-4-2/
Learn alongside innovators, thought-by-thought, in context – O’Reilly Media
Learn alongside innovators, thought-by-thought, in context – O’Reilly Media https://www.oreilly.com/ideas/oreilly-oriole-learn-alongside-innovators-thought-by-thought-in-context
Substance, A JavaScript library for web-based content editing
Substance, A JavaScript library for web-based content editing http://substance.io/
How to annotate the web for the world, your group, or your students – TechRepublic
How to annotate the web for the world, your group, or your students – TechRepublic http://www.techrepublic.com/article/how-to-annotate-the-web-for-the-world-your-group-or-your-students/#ftag=RSS56d97e7