TextSTAT is a free text analysis tool offered by Niederländische Philologie, FU Berlin. It is a simple program designed to accept plain text, HTML, Word and OpenOffice files to produce word frequency lists and concordances, and versions are available in English, German, Dutch, Portugese, Spanish, French, Italian, Galician, Finnish, Polish and Czech. TextSTAT also includes a web spider and news reader for adding web pages and news to a corpus.

SATO (Systeme d'analyse des textes par ordinateur) is a longstanding historic text analysis system, now available as a free, web-based tool. Users can either draw off SATO's corpus or upload their own for analysis, and the texts for analysis may be in French, English or Spanish. It can perform standard text analysis functions such as word frequencies, comparisons, tokenizing and keyword in context, and has predefined filters for searches.

VOCAB - U - LISTER was a tool for lemmatizing texts developed at the University of Toronto in the 1990s. It could handle Spanish text and could process as many as 2000 words at a time.

KH Coder is a tool for quantitative content analysis and text mining that has been under continuous development since 2001. It was originally developed for Japanese text and now supports numerous other languages, including English, Italian and French. KH Coder also has computational linguistics applications.

Overview is a free, web-based tool for document mining. Developed by and for journalists, Overview is also broadly applicable to other corpus-based research applications. Aside from providing advanced search features such as regular expressions and fuzzy matching, Overview automatically sorts documents according to topic and provides a fast visualization and reading interface. You can apply tags to search results, individual documents, or entire topics to track what you've found, then export the entire document set with its tags to perform further processing or create visualization. It’s been used for qualitative research, social media conversation analysis, legal document review, digital humanities, and more. 

SentiStrength is a tool for sentiment analysis available for free to academic users (with registration), in Java and Windows-optimized versions. It estimates the strength of sentiment in short texts, and can handle informal language. Strength is expressed in a scale of 1 to 5 for positive sentiments, and -1 to -5 for negative; it also includes an option for assessing neutrality. SentiStrength is available for multiple languages, with extensibility for languages and contexts not already included. According to the developers, SentiStrength has human-level accuracy for short English texts. Commercial users must purchase a license.

Leximancer is an application for identifying key concepts in a text, and exploring the results through interactive visualizations and data exports. It includes concept and network cloud visualizations, a sentiment lens, a query system, and multiple data export options for futher analysis. The system accepts texts in a variety of formats including plain text, CSV, HTML and XML, and supports 17 languages beyond English. Users can either purchase a license for the desktop version (Windows and OS X supported), or purchase access to the online LexiPortal, which charges based on months of usage rather than on a subscription basis. A free trial of the LexiPortal is also available.