Hazel watches whatever folders you tell it to, automatically organizing your files according to the rules you create. It features a rule interface similar to that of Apple Mail so you should feel right at home. Have Hazel move files around based on name, date, type, what site/email address it came from (Safari and Mail only) and much more.
I actually kind of agree that Homebrew should be root-owned so that sudo is required. OS X is a multi-user Unix, why have one mortal user owning system-level package management?
Qtstalker is a user friendly Technical Analysis package for GNU/Linux (and hence other Unix-like systems). Similar to commercial wares such as Metastock, Supercharts and Tradestation. Keeps to a lean, simple design for speed, portability, and low resource usage. Because it uses a plugin model, Qtstalker can easily be extended.
Grism is an open source stock market observation tool. It allows you to easily track the evolution of stock prices through watchlists, portfolios and charts.
Guy code-reviews Duke Nukem 3D (among more open code bases from iD software, etc.)
Ches Martin posted a photo:
From Banh Mi Phuong. Apparently Tony Bourdain went here.