Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.