1. XPTEST
    A test framework based on the paper Simple Smalltalk Testing: With Patterns
  2. xsubseq
    A version of subseq designed to minimize copying
  3. xujizhe
    Welcome to my cliki page
  4. xuriella
    Xuriella XSLT is an implementation of XSLT 1.0, written entirely in Common Lisp
  5. XXTEA
    XXTEA is an encryption algorithm, first introduced in 1998, which is relatively easy to implement
  6. yaclml
    yaclml (Yet Another Common Lisp Markup Language) is an HTML generator and HTML template library
  7. Yakov Zaytsev
    I'm a Person
  8. Yale Haskell
    Yale Haskell is an early (1993) implementation of the Haskell programming language in Common Lisp
  9. YAML
    Yet Another Markup Language:
  10. Yarden Katz
    Same person as Jordan Katz