- VanHoeak Software – Some awesome plugins for Xojo
- MBS Plugins, a lot of plugins for Xojo.
- MacOSLib – Macoslib A Macintosh library to use advanced features which are not available in Xojo
- Thomas Templemann’s page – TT also has the excellent ZIP Archive classes
- RubberViews – Create one window, this class will manage all controls and their content to fit all resize and resolutions.
- Bkeeney Software – Various of Xojo classes / addons and training knowledge
- Valentina – The incredibly fast and powerful database engine.
- Bob Delaney’s Science Software – Many things for Xojo, including the well known DecimalPlugin.