Qoppa Software, which specializes in PDF tools, has updated PDF Studio (http://www.qoppa.com/psindex.html), a PDF editor, to version 7.0. The upgrade adds adds content editing and an enhanced user interface.
PDF Studio maintains full compatibility with the PDF Standard and supports the latest PDF format. You can: manage digital IDs and trusted certificates for digital signatures; batch preflight to preflight to verify PDF/X compliancy for multiple documents at once; and batch crop to crop multiple documents at once and change the margins for crop box, bleed box, trim box or art box.
PDF Studio is available for Mac, Windows and Linux platforms. PDF Studio comes in two flavors: PDF Studio Standard at $85 and PDF Studio Pro at $125.