#3289
Nik Collection is a powerful and professional plug-in set for photo post-processing, composed of 7 image processing plug-ins for different purposes. The plug-in suite is suitable for Adobe Photoshop, Adobe Lightroom or Apple Aperture (replaced by Apple Photos). With it, we can quickly complete many professional photo editing effects with ease.

#3179
PhotoLine is a lightweight, efficient, fast and easy-to-use image processing software from Germany, it seems to be becoming popular. AppNee likes to regard it as a mini version of Photoshop, this is not just because they have very similar UI and functions.

#2737
PhotoPad (AKA: PhotoPad Image Editor) is a super compact digital image editing tool developed by NCH Software, whose SoundTap Streaming Audio Recorder and VideoPad Video Editor you may still remember them.


#1632
GIMP (GNU Image Manipulation Program) is is an open source, freeware, cross-platform graphic processing software, includes almost all the required functions of image editing. Since originated and popular from Linux system, GIMP is also known as Photoshop under Linux.

#712
PicPick is a rare free and user friendly screen capture application, it is provided with all the frequently-used screenshot functions, such as capture full screen or local picture (catch Windows, control, fixed shape area or your DIY area), and the operations are very simple.

#212
Paint.NET is an image and photo processing software, it was developed and maintained by Rick Brewster when he was a Washington State University student, written in C# (C Sharp programming language), and was provided the project guidance from Microsoft later for locating in one early MS Paint free alternatives.

#207
As for a good third-party image viewer to choose, before, I used to find XnView better than ACDSee, this is true, and i keep my point.But today i just found a better one than XnView - FastStone Image Viewer. If I could evaluate XnView with stars, I will give FastStone Image Viewer 4.5 or 5. Because it has a faster image reading speed than most of the image viewers (including XnView and ACDSee).