A cross-platform, open source Slack app that's built for speed?! Shut up and take my
Wey is written in Node and the UI is powered by the Yue library, which means it's not hitchin' its wagon to Electron. But it does come with a rather large caveat:
Do not use this for work, you might miss important messages due to bugs and missing features.
Depending on how much you like your job, you might consider that more of a feature than a bug. 😉