Msgmate.io now presents itself as the home of Open-Chat Go, a self-hostable chat platform developed by TBS. The stack combines a Go backend, a React frontend and an asynchronous worker queue, with a documented public surface made up of REST and WebSocket APIs, a chat and interaction model, bots and agents, a growing library of LLM models and tools, and several supported clients.
The product started out as a configurable ChatGPT-style assistant you could reach from messengers. Today the emphasis is broader and more developer-focused: the same engine powers a federated chat app, an API you can wire into your own products and industrial automation, and a server you can run yourself. The in-browser app shows a specific model - cognitivecomputations/dolphin-2.6-mixtral-8x7b - and the interface is marked as beta.
Because it is open source, much of the value is in the documentation rather than the marketing page. The docs walk through core concepts, the REST API and its auth and shared capability URLs, models and tools, supported clients, self-hosting with server flags and environment variables, the server CLI, and a built-in terminal UI client for chatting with your bot from the command line.