|Callisto annotation tool
||The Callisto annotation tool was developed to support linguistic annotation of textual sources for any Unicode-supported language.
||WordFreak is a java-based linguistic annotation tool designed to support human, and automatic annotation of linguistic data as well as employ active-learning for human correction of automatically annotated data.
||Entity tagging, machine learning based||http://wordfreak.sourceforge.net/index.html|
||Knowtator is a general-purpose text annotation tool that is integrated with the Protégé knowledge representation system. Knowtator facilitates the manual creation of training and evaluation corpora for a variety of biomedical language processing tasks.
||GATE is a complete architecture for language processing which contains, amongst other applications, tools to perform manual and automatic textual annotation.
||POS tagging, classification, relation extractions, ...||http://gate.ac.uk/|
||brat is a web-based tool for text annotation; that is, for adding notes to existing text documents. 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.
||Entity tagging, entity relation extraction, entity linking||http://brat.nlplab.org/|
||MMAX2 features separation of base data and annotations (i.e. markables) on the file level by means of stand-off annotation. MMAX2 supports arbitrarily many levels of annotation, each of which resides in a separate file.
||entity identification, relation between entities||http://mmax.eml-research.de|
||Domeo is an extensible web application enabling users to visually and efficiently create and share ontology-based stand-off annotation on HTML or XML document targets. The tool supports manual, fully automated, and semi-automated annotation with complete provenance records, as well as personal or community annotation with access authorization and control.
||Entity tagging, entity relation extraction, entity linking||http://annotationframework.org/|
||Tool to annotate text with ontologies
||Entity tagging and linking||http://code.google.com/p/annotation-ontology/|
||OntoMat-Annotizer is an interactive webpage annotation tool. It supports the user with the task of creating and maintaining ontology-based OWL-markups i.e. creating of OWL-instances, attributes and relationships
||@Note is Biomedical Text Mining platform that copes with major Information Retrieval and Information Extraction tasks and promotes multi-disciplinary research.
||Information Retrieval (IR) and Information Extraction(IE)||http://sysbio.di.uminho.pt/anote.php|
||CLaRK is an XML-based software system for corpora development implemented in JAVA. The main aim behind the design of the system is the minimization of human intervention during the creation of language resources.
||Djangology is a web application for distributed collaborative text annotation.
||Text annotation, Inter-annotator agreement statistics||http://sourceforge.net/projects/djangology/|
||Ellogon is a multi-lingual, cross-platform, general-purpose language engineering environment, developed in order to aid both researchers who are doing research in computational linguistics, as well as companies who produce and deliver language engineering systems.
||LingPipe is tool kit for processing text using computational linguistics.
||Text annotation, entity recognition, word variants||http://alias-i.com/lingpipe/index.html|
||The UAM CorpusTool is a state-of-the-art environment for annotation of text corpora.
|UIMA CAS Editor
||The CAS Editor is an eclipse based annotation tool which supports manual and automatic annotation (via running UIMA annotators) of CASes stored in files.