Birdly - Birdly is an expense management and expense report solution for SMBs.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Expensify - Import expenses directly from a credit card to create free expense reports quickly. Approve reports online and reimburse directly to a checking account with one click.
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.
Pry Financials - Finance for Founders
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.