ATLAS.ti is a tool for systematic qualitative data analysis released under a for-pay license. It offers multi-window frames, overviews generated through interactive network views utilizing visual interconnections, and cloud views and reports. A free demo version is also availalble, and does not include a time limit. This tool was first developed in 1989 and has been in continous development since. The web edition has been available since 2002.

Tesseract is a free raw OCR engine originally developed by HP Labs and now maintained by Google. It works with the Leptonica Image Processing Library, and is capable of reading a variety of image formats. It can convert images to text in over 40 languages.

TACT (Text Analysis Computing Tools) is a historically important text analysis and retrieval system that was developed from 1986 to 1989 at the University of Toronto in cooperation with IBM and remained in use into the 1990s. It was designed to run in MS-DOS and permitted inquiries on text databases in a number of European languages. Originally available on two 1.44MB floppy disks, the full fileset is now available for free download.

TUSTEP (Tubingen System of Text Processing Tools) is a free, open source, widely-used toolbox for text processing. It is aimed at scholarly audiences, can work with texts in both latin and non-latin scripts, and is primarily designed for humanites applications. Its modules include data capture, information retrieval, text collation, text analysis, sorting and ordering, rule-based textual manipulation, data export and typesetting. The user manual is only available in German at this time. This tool has been in continuous development since the 1960s.

GINGER II is a word-sense disambiguator for English, offering a new approach to the algorithm developed for GINGER I. It directly extracts semantic disambiguation rules from dictionary example phrases, and semantically tags, syntactically parses and disambiguates those examples. This legacy tool has no affiliated web site and is no longer available.

INTEX is a linguistic development environment active until 2005. It includes large-coverage dictionaries and grammers, can parse texts of several million words in real-time, and tools to create and maintain large-coverage lexical resources, morphological and syntactic grammars, build lemmatized concordances and indices of large texts and identified semantic units.

NETMET is a tool for generating and interpreting metaphors designed to run in DOS. Though this tool is no longer under development, it is still available for download. It includes a number of sample input metaphor files and is designed to be modified and improved as needed by the user.

Micro-EYEBALL is a microprocessor version of the English language parser developed in the 1970s. This historically important legacy tool could also provide statistical descriptions of many linguistic features of a text. This tool is no longer available, and does not have a web presence.

Collate was a program designed for scholars concerned with the difficulties of medieval vernacular traditions. It aimed to help scholars with the preparation of critical editions, and could collate up to a hundred texts. Collate was also capable of handling marked up text. It was available for Macintosh only, and could be purchased directly from its creator.

XTRACT was a tool for lexical collocation developed by Frank Smadja, then of Columbia University. It was designed to use statistical techniques to identify collocations of aribitrary length, and to generate syntactic relationships between words. This tool is no longer available and does not have a web presence.