...Ant task runnable in or outside Eclipse allows you to maintain multiple Java, XML, etc. source variants from a single source base, e.g., multiple project SKUs built on multiple Eclipse versions, without complexity of VCS branch/merge
JOPE (Java Open Project Enviroment) focuses on making development of java projects easier by providing all tools in one place. Features include: Maven support, Ant support, Issue tracking, Mailing lists, VCS support ...