TokenEditor is a web application for manual annotation (or manual review of automatic annotations) of text. Albeit primarily aimed at reviewing PoS tags and lemmas, it is (planned to be) fully customizable, to support any annotation levels.

The application is built with AngularJS, PHP, and PostgreSQL and uses a grid module for data manipulation as well as chart modules for visualization. Changes are stored continuously in the database on token level. The application is also integrated with federated identity infrastructure allowing you to login with your home institutions account.