The MEKA project provides an open source implementation of methods for multi-label learning and evaluation.
See http://waikato.github.io/meka/documentation/ for sources of documentation regarding MEKA.
Tutorial.pdffor detailed information on obtaining, using and extending MEKA.
If you have a specific question, ask on Meka's mailing list
A list of current Issues in Meka (known bugs, planned improvements, feature wishlist) can be found at https://github.com/Waikato/meka/issues
The Meka developers never have enough time to implement everything that should be in Meka. If you would like to contribute something new to Meka, or help with any of the existing issues, please get in touch with the developers.