screen capturing
SNAP - Active Window Screen Capture

Snap is a free portable screen capture tool that can be used to capture screen shots of active Windows. Ether select the active window or create an area on the desktop and click Snap to copy to the clipboard. The resulting clipboard images can then be opened and edited using your favorite image editing tools such as photoshop.
SiteShoter - Webpage Screenshot Tool

SiteShoter is a free screenshotting tool that can be used to take a screenshot of any webpage. It does so by automatically creating a hidden window of Internet Explorer, proceeds to load the desired Web page, and than saves the entire content of the Web page into a .webp, .webp, .tiff, .bmp or .webp image file. The software supports operation via either an intuitive graphical user interface or a command line without using the GUI.
Wink Portable Screen Recorder

Wink Portable is a free and lightweight screen recording and screencasting tool designed to run directly from a USB flash drive without installation. Based on the original Wink software, this portable version is ideal for users who need a simple yet powerful tool for creating tutorials, software demos, and instructional videos on the go.