2511. smart-buffer
      An output buffer that can spill to disk
2512. sml
      S-expression-based markup language
2513. smta
      smta is a simple SMTP email server
2514. smtp4cl
      SMTP4CL is a SMTP client library to send messages to an MTA (Mail Transport Agent)
2515. snakes
      Python style generators for Common Lisp
2516. SNARK
      SNARK (SRI's New Automated Reasoning Kit) is described as "an automated theorem-proving program" being developed in Common Lisp
2517. SNePS
      SNePS (Semantic Network Processing System) is an AI system for building, using and retrieving information from propositional semantic networks
2518. SNMP
      Simple Network Management Protocol
2519. Snooze
      Snooze is an URL router for Common Lisp designed around REST web services
2520. snow
      Snow is a GUI description language for Java and Common Lisp, currently supporting the Swing UI library

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