WordWanderer

Link: http://wordwanderer.org/

It's fun, right?

TinyTM

Link: http://tinytm.sourceforge.net/en/index.html
Intro: TinyTM - Open-Source Translation Memory

Alternative to Amazon Mechanical Turk

Link: http://crowdflower.com/

Note: This online service is not restricted to US.

Data visualization tool

Link: http://www.drasticdata.nl/DDHome.php
Intro: some kinds of beautiful data visualization

(linking to http://newsmap.jp)

Java-based Wiktionary Library (JWKTL)

Link: https://code.google.com/p/jwktl/

Intro: JWKTL (Java-based Wiktionary Library) is an application programming interface for the free multilingual online dictionary Wiktionary (http://www.wiktionary.org). JWKTL enables efficient and structured access to the information encoded in the English, the German, and the Russian Wiktionary language editions, including sense definitions, part of speech tags, etymology, example sentences, translations, semantic relations, and many other lexical information types. The Russian JWKTL parser is based on Wikokit (http://code.google.com/p/wikokit/).

Topic modeling packages

1) MALLET: http://mallet.cs.umass.edu/
2) TMT: http://nlp.stanford.edu/software/tmt/tmt-0.4/
3) GENSIM: http://radimrehurek.com/gensim/index.html

Temporal Tagger HeidelTime

Link: https://code.google.com/p/heideltime/ 

Demo: http://heideltime.ifi.uni-heidelberg.de/heideltime/

Intro: HeidelTime is a multilingual, cross-domain temporal tagger developed at the Database Systems Reseach Group at Heidelberg University. It extracts temporal expressions from documents and normalizes them according to the TIMEX3 annotation standard. HeidelTime is available as UIMA annotator and as standalone version. HeidelTime currently understands documents in English, German, Dutch, Vietnamese, Arabic, Spanish and Italian.