The dev etc Playhaus is home to a variety of open-source software projects.

• Bring up the Subject: Two-line display for Mail under Mac OS X 10.5 Leopard
• Source Code Highlighting: Syntax highlighting source code for Quick Look under Mac OS X 10.5 Leopard
• Better Slides: Improves the display of slides in Preview (Mac OS X 10.4)
• Desktop Effects: A collection of experimental graphical desktop effects
• Patchworks: A Mac OS X Cocoa-based interface to darcs, a revision control system
• Emergence: A stereo image viewer in the style of iPhoto
• DragZoom: A plug-in for Preview to allow zooming by dragging the mouse (Mac OS X 10.4)
• Perfect Fit: A simple application for dividing objects between containers
• Bonjour Lister: A simple command-line tool to list Bonjour hosts
• Mac Bash Completion: Command-line completion for some Mac-specific commands in the Bash shell

• OsiriX Quad-Buffered Stereo: A plug-in for the OsiriX medical imaging application to render 3D views in stereo