The MusicXML import feature in Sibelius makes it much easier to read files from people who use other programs. But until Sibelius 7 was released with MusicXML export, it was difficult to share your own music created in Sibelius with people using other programs. If you use an older version of Sibelius, Dolet® 6 for Sibelius lets you share music with other programs by saving your Sibelius 5 and 6 scores as MusicXML 3.0 files.
Dolet 6 for Sibelius is a Sibelius plug-in that saves MusicXML 3.0 files. It supports Sibelius versions 5.1 and later, and runs on both Windows and Mac. If you are using Sibelius 2019.5 and later, use Dolet 8 for Sibelius instead so you can save MusicXML 4.0 files with greater accuracy. To save MusicXML 1.0 files from Sibelius 2.1 to 5.0, use Dolet 1 for Sibelius instead.