Annotation Graphs are a formal framework for representing linguistic annotations of time series data. (Note: last updated 2007)

This online tool can be used for a wide variety of annotation tasks, including visualization and collaboration.

brat is designed in particular for structured annotation, where the notes are not freeform text but have a fixed form that can be automatically processed and "interpreted" by a computer. brat also supports the annotation of n-ary associations that can link together any number of other annotations participating in specific roles. brat also implements a number of features relying on natural language processing techniques to support human annotation efforts.

CollateX-based text collation client. CollateX, run on an server independent from the URL above, is a powerful, fully automatic, baseless text collation engine for multiple witnesses. A second collation technique, ncritic, provides a slightly different baseless text collation. Each engine complements each other nicely. The user can use different files, even URLs, then output the result in GraphML, TEI, JSON, HTML, or SVG. Fuzzy matching is an option.

A software tool for performing concordance – the analysis of a set of words within its immediate context - on a body of text. The tool performs full concordance, reading and analysing each and every word in a text. It was initially written for the analysis of English texts, but has since been extended to cater for other Western languages. Limited support is also provided for text in East Asian scripts, such as Chinese and Korean.

Features:

cue.language is a Java library that has tokenizing (words/sentences/ngram), string counting, language guessing, and stop word detection capabilities.

GATE (General Architecture for Text Engineering) is a sophisticated framework that allows manual and automatic annotation as well as the processing of all kinds of language resources. GATE has a broad community of users and developers, and comes with diverse plugins for specific linguistic tasks.

MorphAdorner is a Java command-line program which acts as a pipeline manager for processes performing morphological adornment of words in a text. Currently MorphAdorner provides methods for adorning text with standard spellings, parts of speech and lemmata. MorphAdorner also provides facilities for tokenizing text, recognizing sentence boundaries, and extracting names and places.

Praat is software for the phonetic analysis of speech, including support for articulatory and speech synthesis.

QDA Miner is an easy-to-use mixed-methods qualitative data analysis software package for coding, annotating, retrieving and analyzing small and large collections of documents and images. QDA Miner may be used to analyze interview or focus-group transcripts, legal documents, journal articles, even entire books, as well as drawing, photographs, paintings, and other types of visual documents.