CrutziPlayer is a standalone player for NPAPI-based browser plugins (e.g., Flash). It provides external, hardware accelerated fullscreen scaling using XComposite, Cairo, and XFixes. It's a good solution, for example, for playing browser games fullscreen on Linux, as it autodetects the original .swf content size.
Release Notes: This is the initial release.
Q4Wine is a Qt 4 GUI for Wine that helps you to manage Wine prefixes and installed applications. It can export Qt color themes into Wine color settings, works with different Wine versions at the same time, supports autostart icons, can extract icons from PE files, and more.
Release Notes: This release candidate is a pre-1.0 version, so bug hunting season is open.
gfxpoly is a library for doing geometric polygon operations, like intersection, union, hidden surface removal, stroke to outline conversion, wind rule conversion, etc. It's very stable, and has been used to convert hundreds of millions of polygons in production environments.
Release Notes: This is the initial release of the standalone version.