I wanted to bring to your attention my article (https://www.proofhub.com/articles/slack-alternatives) which covers a few tools that I believe could complement the list you have compiled. While your article covers a wide range of alternatives, I noticed a few notable omissions that might be worth considering for future updates.

In particular, I suggest taking a look at Zoho Cliq, which offers unique features that differentiate it from the options already mentioned.

Additionally, ProofHub has gained significant popularity among teams due to its intuitive interface and robust functionality. Lastly, Fuze is another noteworthy tool that has received positive feedback from users for its seamless collaboration capabilities.

I understand that it can be challenging to include every tool in a limited list, and these suggestions are meant to complement the comprehensive work you have already done.

By considering these additions, you would further enhance the value of your article and provide your readers with a more complete overview of the available options.

Thank you once again for sharing your expertise on Slack alternatives. I hope you find these suggestions helpful for future updates. Keep up the excellent work!