Slack is a common item in our toolbelts these days, and the free tier makes it accessible to just about every project.
It has an extensive archive ability that can be useful for channels with human-sourced content. However, if you’re lucky enough to have some bots/automata to converse with, sometimes the chat logs are more like a panegyric for
.bash_history that would surely make
Hal2000 laugh maniacally from the ether.