rjmailer is a replacement for the SMTP part of Sun's javamail library. It sends email messages via SMTP and has the ability to connect directly to the receiving mail servers instead of using a relay server, which in many cases can result in more detailed information about the delivery status.
Saros is a Eclipse plugin for collaborative text editing that in particular targets distributed pair programming (also called remote pair programming), but can support arbitrarily many participants at once. All members of a session have an identical copy of an Eclipse project and Saros keeps these copies in sync as editing progresses.
The Fressia Project is an effort to develop a framework for testing automation. It's intended for users (testers) who want a simple tool that can be used just out of the box. It was originally conceived as part of the QA efforts at the US National Optical Astronomy Observatory. It has been delivered to the community because, despite it still being at early stages, it has proven to be a useful general purpose testing tool. It is designed to provide functional testing, system testing, system integration testing, white (black) box testing, automated regression testing, acceptance testing, etc.
Flat File Reporting allows you to use fixed width files as a data source in IReport designer and Jasper Reports. It uses a record description (which can be XML, Cobol, or RecordEditor Record Layouts) to describe the file format. You can design reports via IReports wizards or by draging and dropping fields onto the report. It can also be used for reports for the RecordEditor and JRecord Projects.
Assimilate is a Maven2 plugin that allows developers to import dependencies from other pre-built Maven projects without a formal parent-child hierarchy existing between the projects. There is no limit to the number of project dependencies. Maven 2.0.9's "import" scope acts not on managed dependencies, but on those declared in the dependency management section of the imported pom file. Assimilate, in contrast, is designed to act on managed dependencies of any prebuilt Maven project (stored in the local repository), as though they were declared in the local project's managed dependency section.