Threads are a kind of concurrency.

Currently, threads are supported in sbcl under GNU/Linux, cmucl on x86 (on linux, freebsd, and openbsd), openmcl on OS X and linux, ecl on all platforms and OS-es including linux, windows, *BSD, Solaris, MacOSX, and in some commercial Common Lisp implementations.

There are also thread compatibility layers.

  • Also, McCLIM provides a thread compatibility layer in the CLIM-SYS package.