Annif is an open source toolkit for automated subject indexing. It integrates several machine learning and AI based algorithms for text classification.
The HydroShare architecture is a stack of storage and computation, web services, and user applications. A content management system, Django+Mezzanine, provides user interface, search, social media functions, and services. iRODS provides content storage. A web browser is the main interface to HydroShare, however a web services applications programming interface (API) supports access through other hydrologic modeling systems, and the architecture separates the interface layer and services layer exposing all functionality through these web services.
BioSchemas relies and extends from schema.org and aims to reuse existing standards and reach consensus among a wide number of life sciences organizations and communities.