Alien Skin Software's BlowUp is a ultra-high-quality and pretty handy nondestructive image zooming tool released as Adobe Photoshop/Lightroom's filter plugin and standalone application. Its powerful features even leave many similar software (such as BenVista PhotoZoom Pro, Reshade Image Enlarger, Inpixio Photo Maximizer Pro...) in the dust!
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.
ColorPix is a very small screen color picking software, it will show the mouse current location (display as pixels), RGB color value, HEX color value, HSB value and CMYK value, besides, it also supports the screen color grabbing under a magnifier (up to 2800%).