i've been working on a project i'd like hosted
elephant - an object database for common lisp
elephant is an object database for common lisp. it is transparent to use, plays well with CLOS, easy to use, flexible, and fast. it uses sleepycat (berkeley db), which is server-less, ACID compliant, transactional, multi-process and thread safe, and probably beats the pants off of most relational databases. the design goals are simplicity, ease-of-use, safety, and speed.
currently it is in alpha, so claims about performance and safety should be taken with a grain of salt. eventually it will be portable but right now only works on CMUCL; it uses Paul Foley's berkeley-db package.
developers: Andrew Blumberg, Ben Lee
license: not decided yet, but will be free