Indeed. Here’s a matrix of all editions
| Feature | Standard | Pro | Server |
|---|---|---|---|
| Annotations | X | X | X |
| AppleScript | X | X | X |
| Classify | X | X | X |
| Encrypted databases | X | X | X |
| Feeds | X | X | X |
| Filters (dates, marks, tags, or geolocation) | X | X | X |
| Indexing | X | X | X |
| Item links | X | X | X |
| Reading List | X | X | X |
| Reminders | X | X | X |
| See Also | X | X | X |
| Smart Groups | X | X | X |
| Smart Rules | X | X | X |
| Smart Templates | X | X | X |
| Synch | X | X | X |
| Tags | X | X | X |
| Bookends integration | X | X | |
| Concordance | X | X | |
| Custom metadata | X | X | |
| Download Manager | X | X | |
| Email archiving | X | X | |
| Form views | X | X | |
| Grouping similar items | X | X | |
| Image Capture | X | X | |
| Imprinting PDFs and images | X | X | |
| OCR | X | X | |
| Scanner integration | X | X | |
| Web interface | X |