KnowledgeFrame is a proven, mature Java framework for agile design and development of sophisticated business database applications based on live metadata and live business rules, using a declarative approach. Links to RETS 1.7 protocol.
Talisman is an interpreter for a logical markup language. This language contains the content and logic of a web (or, in the future, Java Swing) based user interface, including arbitrary datatypes and processing actions.
Aparicio delivers accessible, AJAX-based web user interface (and example JEE/Servlets binding) to render and edit Semantic information. It allows users to easily create RDF data.
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.