Microsoft Teams - drains my battery 1% every two minutes
Slack - the original “let’s forget everything we’ve learned about communications and try to discover it again”. From the threads feature nobody wants to the inability to silence bots or plugins, Slack never fails to disappoint. They pitch it as a knowledge archiving tool but unless you know exactly where, when, and who said something good luck finding it.
G-Suite has been awesome for almost five years now, though it can be problematic when you need to communicate with people outside your org that don’t use g-suite for work. Hangouts drains my battery fairly aggressively also but not as much as Teams, so I’ve switched to Zoom for video - plus it works seamlessly reguardless of which email program people use.
