List.ly is an online tool for building collaborative lists. Upon sharing the lists, other users can contribute to them or see what others have added. Each entry in the list can be voted upon, in order to produce democratically a ranking order.
Lists can be easily embedded in external websites. The List.ly homepage features trending lists that get the most attention. A search bar for retrieving lists by keywords is also provided.
List.ly was launched in April 2011 and currently it attracts consistently over one thousand unique visitors each month, according to Compete.