There are 2 repositories under common-lisp-tools topic.
A curated list of awesome Common Lisp frameworks, libraries and other shiny stuff.
The main repo for the Medley Interlisp project. Wiki, Issues are here. Other repositories include maiko (the VM implementation) and Interlisp.github.io (web site sources)
Apropos across Quicklisp libraries
An utility which collects information about Common Lisp implementation and systems for bugreports
Convert Common Lisp to JavaScript with Parenscript
Improved REPL for SBCL
convert lisp types into each other