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Best Thing is Friendica is a free and open-source software distributed social network. It forms one part of the Fediverse, an interconnected and decentralized network of independently operated servers
Based on our record, Friendica seems to be a lot more popular than Whaller. While we know about 32 links to Friendica, we've tracked only 1 mention of Whaller. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I suggest you try Whaller. Their equivalent to Slack channels have tabs which include messages/posts, a file manager, a task kanban, videoconferencing and a few other useful stuff for what you need. Source: almost 3 years ago
You might want to look into some of the Facebook-like open-source social networking programs like Friendica, Hubzilla, Libervia, or GNU Social. Source: 6 months ago
I think that Friendi.ca is the fediverse equivalent of FB, in the same way that Mastodon is to twitter. https://friendi.ca. Source: 11 months ago
In addition to what has been said, you can also use Friendica, another great decentralized alternative (server list). It supports RSS, along with being a regular social network. Source: 11 months ago
Facebook being whatever it is would be friendi.ca. Source: about 1 year ago
Given the similarity to FB, what's the advantage over Friendica or Hubzilla? Both support federation with other servers and can be run as a closed community too. Source: about 1 year ago
Yammer - Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
Slack - A messaging app for teams who see through the Earth!
Gab - Gab is an ad-free social network dedicated to free speech.
Samepage - Samepage facilitates communication, project management, meetings, online collaboration, and more by combining team chat, video calling, screen sharing, task management, and real-time team document collaboration in a single collaborative workspace.
Diaspora - The online social world where you are in control.