FastStone Capture is a powerful, lightweight, yet full-featured screen capture tool and screen video recorder.

XnConvert is a powerful and free cross-platform batch image processor, allowing you to combine over 80 actions.

jPDF Tweak is a Java Swing application that can combine, split, rotate, reorder, watermark, encrypt, sign, and otherwise tweak PDF files.

PDF Studio is a multi-platform PDF editor.

Light Image Resizer can resize and convert images one by one or in batch as well as other features.