Check out the projects other people have proposed. These need owners - do you have what it takes! Email community@mulesoft.com if you'd like to adopt a project - with it comes fame, glory, and working with a terrific communtiy.
Open sourcing non-business sensitive Mule extensions on MuleForge has a number of benefits:
Reliable and backed-up hosting environment providing source code control through SVN, continuous builds through Bamboo, issue tracking through JIRA, documentation wiki through Confluence, project statistics, mailing lists, and much more
Access to hundreds of developers and thousands of users to help further develop and test your code
Continuous build system ensures that projects are healthy and work with current Mule versions
