spawn-fcgi is used to spawn FastCGI applications

Wiki (News,Tracker,Forum)	https://redmine.lighttpd.net/projects/spawn-fcgi/wiki
current 1.6.x release	https://download.lighttpd.net/spawn-fcgi/releases-1.6.x/spawn-fcgi-1.6.3.tar.gz https://download.lighttpd.net/spawn-fcgi/releases-1.6.x/spawn-fcgi-1.6.3.tar.bz2
git 1.6.x	git clone https://git.lighttpd.net/spawn-fcgi.git
git 1.6.x snapshot	https://git.lighttpd.net/spawn-fcgi.git/snapshot/spawn-fcgi-master.tar.gz

You need to run ./autogen.sh for the svn/git checkouts and the cgit snapshots; this requires autoconf and automake.
Use "git pull" to update git repositories and "svn up" to update svn checkouts.