Java Web Printer
Download websites as e-book: pdf, txt, epub.
An open source search engine with RESTFul API and crawlers
Open Source Enterprise Content Management ECM
Framework for search and display of heterogenous document collections.
Web-based knowledge base template.
Provides export options for blogs, journals and dynamic lists
an embeddable spreadsheet for your web application
although fully functional, this is a pre-framework that you can extend