Sibelius to MEI Plugin

SibMEI is an open source plug-in that makes it easy to export MEI from the Sibelius notation editor.  In addition to facilitating the creation of MEI-formatted data without the burden of writing XML by hand, it also makes it possible to convert MusicXML files to MEI.

The plug-in can be downloaded from  General installation instructions for Sibelius plug-ins can be found at Once installed, an Export to MEI option will appear in the plug-in list in Sibelius.