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Tiny Scala high-performance, async web framework, inspired by Sinatra

Knot DNS: High-performance authoritative-only DNS server. https://www.knot-dns.cz/support/

High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton.

A high-performance BitTorrent tracker in Go.

A high-performance, multithreaded FastCGI server with stateful Lua scripts