Portable Threads (and Scheduled and Periodic Functions) API for Common Lisp (from GBBopen project)
http://gbbopen.org/hyperdoc/ref-portable-thread-entities.html
http://gbbopen.org/hyperdoc/ref-scheduled-function-entities.html
romanab/portable-threads
Portable threads API for Common Lisp (from GBBopen project)
Common LispNOASSERTION