| 1 | 10 | 4 | concurrent-ruby | Modern concurrency tools including agents, futures, promises, thread pools, actors, sup... |
| 2 | 12 | 14 | rack | Rack provides a minimal, modular and adaptable interface for developing
web application... |
| 3 | 79 | 91 | puma | Puma is a simple, fast, multi-threaded, and highly parallel HTTP 1.1 server
for Ruby/Ra... |
| 4 | 259 | 779 | thin | A thin and fast web server |
| 5 | 457 | 1,024 | unicorn | unicorn is an HTTP server for Rack applications designed to only serve
fast clients on ... |
| 6 | 1,151 | 1,053 | rack-contrib | Contributed Rack Middleware and Utilities |
| 7 | 8,253 | 7,390 | iodine | A fast HTTP / Websocket Server with built-in Pub/Sub support (with or without Redis), s... |
| 8 | 9,204 | 14,134 | goliath | Async framework for writing API servers |
| 9 | 10,375 | 9,242 | torquebox | TorqueBox Gem |
| 10 | 10,425 | 8,404 | reel | A Celluloid::IO-powered HTTP server |
| 11 | 12,795 | 9,837 | sequenceserver | SequenceServer lets you rapidly set up a BLAST+ server with an intuitive
user interface... |
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