With PDFMergeX you can combine, transform and reorder your pdfs documents. If you need to merge more than one pdfs, move page inside a document or take a look at your pdfs, PDFMergeX is for you. It’s quite simple (in fact I’ve finished it in a day) and at this time you can’t edit your pdf contents but a day…
PDFMerge was made using Cocoa and Objective-C: it’s small and fast and it uses standard Quartz 2D Technology (PDFKit) to view and edit your documents. Optimized and secure, it’s a system feature!