FIrst and foremost tool that I install on a pc after a fresh Windows OS installation, WinRAR is user-friendly, not bloated, fast, stable and customizable with different themes. Constantly updated and maintained, it is small, sleek and immensely popular. WinRAR features multi-format and multi-OS support, multi-OS versions, file drag-and-drop functionality, password protection, archive locking, recovery record support, archive repair function, large file support, elegant handling of self-extracting archives, 256-bit encryption and Unicode file / directory naming ability. A must have program for every PC and my primary archiver for long, I like its sleek and cascaded context menu very much. I would be more than happy to own a personal license of this masterpiece.