91. april
    A subset of APL (A Programming Language) compiling to Common Lisp
92. Araneida
    Araneida is a fairly small free extensible HTTP server for SBCL and many other Common Lisp implementations
93. ARC4
    A Common Lisp implementation of ARC4 (trademark: RC4), a stream cipher, can be found below
94. archive
    ARCHIVE is a library for reading an writing disk-based file archives such as those generated by the 'tar' and 'cpio' programs on Unix
95. Arduino
    Arduino Lisp - Arduino Lisp is a compiler from a subset of Common Lisp to the subset of C++ used by the Arduino C++ compiler arduino-experiments - arduino-experiments is a library for interfacing to the Arduino embedded computer via serial I/O from Lisp
96. Arduino Lisp
    Arduino Lisp is a compiler from a subset of Common Lisp to the subset of C++ used by the Arduino C++ compiler
97. arduino-experiments
    arduino-experiments is a library for interfacing to the Arduino embedded computer via serial I/O from Lisp
98. argdoc
    simple package documentation library for common lisp
99. argparse
    simple argument parser library for common lisp
100. armish
     Armish is an arm assembler

CLiki the common lisp wiki