Firebug Lite Beta for Google Chrome and Opera Browser
Plays music from Animal Crossing: New Leaf for each hour of the day.
Web Starter Kit - a workflow for multi-device websites
Adds a customizable menu item to Jupyter (IPython) notebooks
A Google Maps extension that shows Labels In the Map Border (LIMBs).
Download Facebook Photo Album
Easily manage your list of favourite TV Shows. Track upcoming shows.
Chrome extension
Periodic Table Chrome Extension
MM3-ProxySwitch - Firefox & Chrome - Extension (Add-ons)
Clip and Share your world! Social sharing made easy.
CRM system based on vtiger, adapted to Polish companies.
Google Chrome standalone ftp extension using applet
Hide all Google+ stuff like the Google+ bar and the +You button.