soketi - Your simple, fast, and resilient open-source WS server.
GraphQL.Security - Quickly check the security of your GraphQL endpoints
websocketd - Turn any program that uses STDIN/STDOUT into a WebSocket server. Like inetd, but for WebSockets.
StatusCake - Website Uptime Monitoring & Alerts โ Free Unlimited Downtime Monitoring
Cleora - Native HTTP & WebSocket Client for iOS, iPadOS & macOS
Upsite - A multi-tenant minimal website builder made with Ruby on Rails