Raven is a team chat app you host yourself, with the channels, threads, and file sharing of the big hosted tools and none of the per-seat bills. Public and private channels group into workspaces, and direct messages cover everything else. A side discussion can move into a thread so the main channel stays readable. Messages support formatting, mentions, code blocks, polls, emoji, and custom reactions, and dropped-in photos, videos, and documents get previews plus a per-channel list of every file. One search box finds messages, files, links, and people across all your channels. Notifications reach the browser and phones with quiet hours and per-channel settings, reminders bring a message back later, and scheduled messages go out at a set time. Paste a link to any document on the site and Raven shows a card with its status and key fields, post to a channel when a document is created or submitted, or approve and reject straight from the conversation. Bots, incoming webhooks, and agents backed by your own OpenAI-compatible provider extend the chat, and iOS and Android apps connect to the same site. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.