Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
incron - This program is an "inotify cron" system. It consists of a daemon and a table manipulator.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
fcron - Fcron is a scheduler designed for Unix/Linux systems, especially usefull when your system is not up all the day long.
Cellist - Cellist is an all-in-one HTTP debugging proxy software designed for OS that provides a straightforward approach to put a proxy between the HTTP client and the internet.
mcron - mcron is GNU's implementation of cron. It is a 100% compatible replacement for Vixie cron.