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So he has a motive.

He's completely right about Slack though. This is just one of many reasons I tend to hate non-native apps.

And this isn't the first time I've heard of this issue with Slack (by a long shot).

If this post does anything to get people to care about performance and memory usage or the Slack people to work to fix this... fine with me.

Yeah his company doesn't do that kind of real time messaging

https://www.ably.io/

Different kind of messaging.

Please don't troll and have a look at what Ably actually is.

It's data messaging, not user / VoIP / chat messaging. We are in no way a competitor to Slack or ever will be. We deliver a platform realtime data delivery. In fact, companies like Slack are often our customers.

See https://www.ably.io/platform if you want to see what we offer and how it is in no way related.

If his company was a competitor, why would he say that he used Slack for internal communication?

I had that feeling too when the article was that light.

If you check out the site, it's not actually a competitor to Slack at all.

Slack is for one human to message another human, not for one application to message another application.