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).

Wmatrix is a free tool for corpus analysis and comparison. It provides a web interface for USAS and CLAWS, in addition to enabling standard corpus linguistic functions such as frequency lists and concordances.

WordStat is a commercial software package for content analysis and text mining on natural language text such as interview transcripts. It also includes features for automatic document tagging and classification.

Lexa is a free legacy set of programs for corpus processing. It is designed to tag and lemmatize texts or series of texts. The website for Lexa is no longer maintained or active, but may still be viewed via the Internet Archive.

Automatic Mapping Among Lexico-Grammatical Annotation Models (AMALGAM) is a free, longstanding tool for tagging text according to part of speech (PoS) from Leeds University. It includes eight PoS tag schemes, and a Multi-Tagged Corpus of samples tagged with various schemas.

TOSCA was a syntactic analysis system available in the 1990s. It required users to apply word class tags and syntactic markers, which it then used for syntactic parsing.

IITagger was a part of speech tagging system developed in the 1990s to assign part of speech information to words from the Wall Street Journal.

WinBrill is a part-of-speech tagger developed by Eric Brill in the 1990s for the French language laboratory ATILF. It was originally available for UNIX, with WinBrill optimized for Windows 95/98/NT as of 1999. The ATILP provided a vocabulary and rules files based on FRANTEXT data. Versions of the Brill tagger are still extant online.

Scholarometer is a browser plugin for Firefox and Chrome that can help contribute to citation and impact analysis.