Sharing designs with other users is easy: Simply offer a .BE file and any Platform product or even the free Express Mode in the program will allow someone to save it in the format they need for their machine.
You have two choices when you share.
Offer the file with all the digitizing objects.
This allows users owning StitchArtist to modify your work for their own purposes. Sizing capability is enhanced because the stitches will generate from the objects while sizing.
2.) Save the file as a stitch file, then re-import that.
This prevents users from accessing your original objects.
Platform titles work as with any stitch file, for example Essentials will be able to recalculate stitches, and/or remove overlaps when combined, etc.
Note: If you have more than one design, you may want to use the StitchArtist Level 3 menu command, Create > Publish > Batch Export Stitch Files.