SnapDB - Simple, flat-file database/list app.
Altova XMLSpy - The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.
sPlaylistMaker - sPlaylistMaker allows you to easily create .m3u and .m3u8 playlists
Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
Playlist Creator - At oddgravity you find useful tools for Windows and exciting games for the small deflection in between. All programs are Freeware and can be downloaded directly from the homepage.
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.