xraster is Freeware program for Windows developed by data&vision GmbH
Graphicutility to drop moire-effects from pictures and simultaneously keeping the characteristic of your images. Unlike this Freeware-Edition, the Standard-Edition let you salvage all accomplished actions as filters, which you can use seeking a batchrun through portrait libaries. This program is based on a mathematic algorithm from Dr. A. Heesemann.
pro & contra:
+ pptimized pictures without qualitylosses + automation with filters and batchruns (commercial-edition single) + plain Use + cost
- little period of vocational adjustment - statistics&vision is currently the unique distributor