Thank you for your post.
FileMaker Pro does give you the ability to share database files with up-to nine other FileMaker Pro users. If you need more, then you need FileMaker Server. FileMaker Pro also allows you to share your database file over the web with five concurrent users who have a browser. If you need more, then the FileMaker Server products are required. FileMaker Pro Advanced allows you to develop runtime applications and distribute to other users without them having to purchase FileMaker Pro. However, runtime applications cannot be shared.
For more information, please see the Product pages on our web site - www.filemaker.com