On ScribD there is a downloadable PDF by Charles A. Sullivan full of very useful information about working with Patristic Greek, websites, tips, etc. It’s here.
Thanks to Robert Bedrosian for pointing out that a search for “patristics” and “syriac” will produce results of considerable interest. The same is true for “coptic”.
You have to register for a free account, and not all material is downloadable; but much is. I suspect at least some of this is less than legitimate; other material; such as the PDF above, is undoubtedly legal. I was amused to discover some material from my own websites appeared, reformatted, as well (which is all to the good, of course).
All very interesting. Shall be back!
Another fine resource, you are a wonder!
Thanks are due to Robert Bedrosian who told me about it!