OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
Ninox - Ninox is a human-friendly database. Create your own Business Application with Ninox that matches your workflow. Ninox lets you integrate CRM, ERP, HR and many more...
Grails - An Open Source, full stack, web application framework for the JVM
QuickBase - Quickbase provides a no-code operational agility platform that enables organizations to improve operations through real time insights and automation across complex processes and disparate systems.