I believe several (most?) IRC servers support logging channel transcripts; and those can be easily made web-accessible. If you're not running the IRC server, yo

I believe several (most?) IRC servers support logging channel transcripts; and those can be easily made web-accessible. If you're not running the IRC server, you can use a logging bot to do that. See discussion 7 years ago on serverfault.com, and the links therein: How to set up a IRC server that logs all messages? https://serverfault.com/q/190069/113898 https://serverfault.com/q/190069/113898 How to Offer Searchable IRC logs? https://serverfault.com/q/36886/113898 https://serverfault.com/q/36886/113898 The bot option should be valid for Matrix as well, although there I'm not sure the bot world is well-enough developed to be 100% sure that a bot exist for every common desire like saving channel logs.