COMT is the core engine of co-ment(R), the leading Web service for text annotation. It is an autonomous software released under the ​GNU Affero GPL version 3 with a reservation clause on the trademark co-ment (see trademark use regulation). COMT enables you to install and run a text-annotation Web service. COMT operates a workspace shared among a group of users. In this workspace, one can create, upload, submit to comments, revise, and export texts and their comments. User rights are defined for the whole set of texts in the workspace and can be specialized for each text. You can install COMT to run your own service or use co-ment as a hosted service: