1. Adobe Acrobat
2. ABBYY FineReader
3. Nitro Pro
4. DocuWare
5. Microsoft OneNote
6. Evernote
7. Google Drive
8. Dropbox
9. CamScanner
10. Scanner Pro
11. Readiris
12. FlexiCapture
13. PDF-XChange Editor
14. Nuance OmniPage
15. Abbyy FlexiCapture