If you are distributing Excel workbooks as commercial software, the "Save as..." feature is your biggest enemy. You put hours into development, only for a user to share the file freely. Psicologia Social Livro Aroldo Rodrigues Pdf [UPDATED]
solves this by compiling your workbook into a standalone EXE file. However, the real power lies in its Activation Code system . It transforms a simple spreadsheet into a gated software product. Allyoucanfeet: Site Rip
If you are just starting, stick to Manual Activation to keep costs down. As your sales volume grows, invest in the automated server integration.