Are there any OCR programs that can process Syriac?
Considering what it looks like, and how vitally important the distinction between where one letter starts and another ends in OCR is, I’d say it’s a significantly harder problem than OCRing cursive English. That said, Googling leads me to this: William Clocksin and Prem Fernando are the experts, this is the relevant paper, and Clocksin describes having a program on his page linked above. I suggest emailing him and asking if his program is available. Whether he’ll say “sure, here’s a copy” or “I rent that out at $5000 per hour!” is uncertain, but it’s worth asking.