Tinode
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.
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All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon.
Screego
Screego is a simple tool to quickly share your screen to one or multiple people via web browser.
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Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.
AnyCable
Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.
Artalk
Comment system built in Golang, providing a lightweight and highly customizable solution for adding comments to your website.
Betula
Single-user federated bookmark manager with Fediverse support and archives.