Open source. Open possibilities.

Maintains updated lists of public BitTorrent trackers across multiple protocols (HTTP, HTTPS, UDP, WebSocket, I2P, Yggdrasil). Automatically checked and sorted by popularity and latency.

Apache Dubbo is a Java-based RPC and microservice framework supporting multiple protocols like Triple (gRPC-compatible), Dubbo2 TCP, and REST, with service discovery, traffic management, observability, and Spring Boot integration.

curl is a widely used command-line tool and the libcurl library for transferring data to and from servers using URL syntax, with broad protocol support including HTTP, HTTPS, FTP, SFTP, SMTP, IMAP, MQTT, WebSocket and more.

Locust is an open-source load testing tool that lets you write tests in plain Python. It supports distributed testing, real-time web UI, and can test any system via custom clients.