141. avl-tree
     AVL (Adelson-Velsky-Landis) Tree is a self-balancing binary search tree implementation in Common Lisp
142. AWK Lisp
     AWK Lisp is a A Common Lisp interpreter implemented in Awk and written by Roger Rohrbach
143. axiom
     Axiom is a general purpose Computer Algebra application
144. Azamat S. Kalimoulline
     Azamat S
145. B-Tries
     A prototypical implementation of the data structure described in the paper "B-tries for disk-based string management" (PDF)
146. Babel
     Babel is a character encoding/decoding library, not unlike GNU libiconv, but completely written in Common Lisp
147. babel-stream
     decoding input and encoding output character streams using Babel
148. Babel2
     Babel2 is a collection of software created by a group of researchers primarily from the Free University of Brussels and Sony CSL Paris, which comprises:
149. Bach Chorales
     A database of music (100 chorale melodies) harmonised by J.S Bach
150. bailout
     Supervision trees for Common Lisp

CLiki the common lisp wiki