All software is freely available under an open-source license.

Online services:

• Embedzlement - An online service that offers free polls to embedded into your website
• img.cogsci.nl - Free hosting for small images
• Online Gabor patch Generator - The easiest way to create Gabor patches

Actively maintained:

• OpenSesame - A graphical experiment builder for the social sciences (Platform: Windows/ Linux/ Mac OS)
• Mantra - Use object/ movement tracking in your psychological experiments (Platform: Linux; connects to Windows/ Linux/ Mac OS)
• Qnotero (formerly Gnotero) - Provides quick access to your Zotero references (Platform: Windows/ Linux)
• QuiEdit - A full screen text editor that shields you from the distractions of digital life (Platform: Windows/ Linux)

Not actively maintained:

• Elascii - Data viewer for the Eyelink series of eye trackers (Platform: Windows/ Linux)
• Gnotero (replaced by Qnotero) - Provides quick access to your Zotero references (Platform: Windows/ Linux)
• Gedit IPython plugin - A plugin for the Gedit text editor that allows you to run selected text in a IPython console (Platform: Linux)
• Online spreadsheet merger - Merge spreadsheets, filter columns, and convert between .xls and .csv/.txt