There is a 3rd alternative...
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Why choose Slack or Wimi?
Slack has more features than Wimi, including mentions, voice messages, polls, and threads. However, Wimi has online document editing, document viewer, and documents management while Slack does not. Both platforms have user profiles, mobile, web, and desktop apps, and integrations with APIs, but Slack has end-to-end encryption and SAML/SSO authentication, which Wimi only offers in their enterprise plan. Overall, it depends on the specific needs of the user, as Slack might be better for communication-heavy teams, while Wimi could be more beneficial for teams working on document-heavy projects.