- The Internet Picture Dictionary® (allows browsing by categories)
- One Look® Dictionary (allows searching for words related to a concept)
- VisuWords® (online graphical dictionary)
- And last, but not least, a dictionary of collocations, which can be consulted online (again for free): Oxford Collocations Dictionary Online for Advanced English Learners:
|ozdic.com - Collocations for "task"|
NOTE: Originally published on 19th June, 2009. Last updated on 7 September, 2012.