I just released the first public version of Spring Security Acl with Mongodb as the data store at https://bitbucket.org/tinhtruong/spring-security-acl-mongodb. Inspired from Spring implementation based on JDBC, I leverage the power of the Spring Data Mongodb to implement the retrieve strategy for ACL stuff. The implementation is based on Spring Security 3.1.0.RELEASE (the latest version at this time).
It is released under Apache 2.0 license, so you can use it in your commercial projects.
I use Gradle as the build system. So if you want to build from the source, make sure you have an up-and-running Gradle 1.0. To create a jar:
gradle jarFeedback are welcome!