- opticl 79 An image processing library for Common Lisp
- clem 15 A matrix library for common lisp
- mcclim 15 (slyrus' fork of) McCLIM, an implementation of the "Common Lisp Interface Manager CLIM II Specification."
- cl-bio 13 A common lisp library for representing and processing biological data such as sequences, genes, proteins, etc...
- epigraph 9 A library for representing graphs (sets of nodes and edges) in common lisp