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Whaller might be a bit more popular than Crossfilter. We know about 1 link to it since March 2021 and only 1 link to Crossfilter. 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.
There is a library called Crossfilter developed by Square https://square.github.io/crossfilter/ Could be useful. Source: over 2 years ago
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
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