List of free chat stuff for developerππ½
If you're looking for all programming tools around chat (not just free). Check this page List of chat Programming Tools
Delta Chat
Delta Chat is a messaging app that works over e-mail π¨οΈ Message anyone with an e-mail address even if they donβt use Delta Chat.
Tag: chat
Free self-hosted

Free forever Live Chat Ticketing Knowledge Base Chat Pages Team Chat

Stream
Scalable & fast API for building social networks, activity feeds, activity streams and chat apps.
Tag: chat, feeds, api
5 or less team members Less than $10k in monthly revenue Less than $100k in funding

2 Seats (Admin)
For personal websites and anyone who wants a basic chat to communicate with visitors.
Livechat, Team Inbox, Mobile Apps, Notification