ghostwriter is a Markdown editor that provides a themable, distraction-free writing environment, along with a live HTML preview as you type, easy document navigation with an outline HUD, and export to popular document formats with Sundown, Pandoc, MultiMarkdown, Discount, cmark, or cmark-gfm processors. It also features a live word count and auto-save. Eliminate distractions in fullscreen mode, or concentrate on the current text you are writing in focus mode. It even remembers your last opened file and position within the file, so you can pick up where you last left off.

The BuildBot is a system to automate the compile/test cycle required by most software projects to validate code changes. By automatically rebuilding and testing the tree each time something has changed, build problems are pinpointed quickly, before other developers are inconvenienced by the failure. The guilty developer can be identified and harassed without human intervention.

GLPK (GNU Linear Programming Kit) is intended for solving large-scale linear programming (LP), mixed integer programming (MIP), and other related problems. It is a set of routines written in ANSI C and organized in the form of a callable library.

The goal of the game is to conquer as much of the board as possible. This is done by capturing the opponent’s pieces or by cloning your own. The board is a hexagon built from smaller hexagons.