421. CL-DTYPE
     CL-DTYPE is a Common Lisp library implementing the DType networking protocol, introduced by MIT Media Labs
422. CL-EARLEY-PARSER
     The Earley parser depends on a grammar description (currently in Backus-Naur form) and a lexicon (currently in a plist like form)
423. CL-EC2
     CL-EC2 is a Common Lisp library for communicating with Amazon's EC2 and CloudWatch Query APIs
424. cl-echonest
     cl-echonest is a binding to the echonest.com web API
425. CL-ECMA-48
     Implement the ECMA-48 standard
426. cl-edn
     cl-edn is a parser for EDN
427. cl-elf
     cl-elf is a library for reading and writing the ELF executable file format
428. CL-Emacs
     Various people have proposed an emacs-like editor written in Common
429. CL-EMB
     CL-EMB is a templating library
430. cl-en
     cl-en provides a common lisp interface to the echonest music analysis web API

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