TXM is a free, open source text corpus analysis environment. Its features include concordance, collocate search, frequencies based on the CQP full text search engine and statistical functions based on R packages. It can export results in CSV, XML or SVG format, and runs as a standalone desktop application in Windows, OS X and Linux environments, or as a web portal (download the leaflet for more).

The UVic Image Markup Tool is a free tool for annotating images and storing the annotations in XML files from the University of Victoria's Humanities Computing and Media Centre. Its interface is designed for users without prior XML experience with additional functions for users familiar with XML, and supports multiple languages. The Image Markup Tool is available for Windows, and will also run in Linux with Wine.

The CETA (Centre pour l'Etude de la Traduction Automatique) Parser was a program developed in the 1960s that could automatically reduce Russian sentences to a string of words and provide equivalents for each in French. CETA developed its parser in conjunction with Professor Mel'chuk of Moscow.

TRICON was a concordance program developed in the 1960s for the Berkeley Machine Translation Project. The program was designed to work with texts in languages written in non-Roman alphabets, such as Russian (original version) or Judeo Arabic texts (as of 1967). It was developed in FORTRAN G and ran on IBM 360/70 computers.

The Scharfenberg-Smith Concordance Program, briefly known as the ICRH (Institute for Computer Research in the Humanities) Concordance Generator, was developed at the Thomas J. Watson Reserach Centre as part of research in machine translation from Russian to English. It was first described in 1964 as a program for teh IBM 7090.

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.