1. IRC, and share files and images through web-based sharing platforms and links.
Simple, low resource consumption, excellent instrumentation and automation possibilities, logging, etc. Downside - not as convenient as pasting shared content onto a channel. There are web-based IRC clients as well, but they're the opposite of private, and few of the benefits of standalone clients.
In extremely extensive use by many groups and organizations, despite not being fashionable.
2. Telegram (using the groups feature)
Kind of in the middle between Slack and IRC, I guess. Not sure you can use it from within the browser though.
Used, for example, by the LibreOffice development community (from which I noticed this kind of Slack-like use - the LTR/RTL QA volunteers have their own group.)
1. IRC, and share files and images through web-based sharing platforms and links.
Simple, low resource consumption, excellent instrumentation and automation possibilities, logging, etc. Downside - not as convenient as pasting shared content onto a channel. There are web-based IRC clients as well, but they're the opposite of private, and few of the benefits of standalone clients.
In extremely extensive use by many groups and organizations, despite not being fashionable.
2. Telegram (using the groups feature)
Kind of in the middle between Slack and IRC, I guess. Not sure you can use it from within the browser though.
Used, for example, by the LibreOffice development community (from which I noticed this kind of Slack-like use - the LTR/RTL QA volunteers have their own group.)