Any deleted files, as long as they have not been overwritten, in theory that is completely can be recovered, of course, that needs to pay the corresponding cost. Therefore, for very privacy data, such as photo, video, office file... you'd better use special software to shred them rather than just right click to delete.

nullDC is a free, open source 32-bit Sega Dreamcast and Sega NAOMI (arcade edition of Sega hardware) game consoles emulator for Windows, first released in 2006 and discontinued in 2011. While, even compared with its successor - Reicast, nullDC is still a better choice for Dreamcast emulation on Windows.

PPSSPP (short for PlayStation Portable Simulator Suitable for Playing Portably) is a cross-platform and open-source emulator originally created by Henrik Rydgård (AKA: hrydgard, one of the main members in the development team of the renowned NGC/Wii emulator - Dolphin) from Sweden, in 2012. It can perfectly run the vast majority of PSP games, supports Windows, Linux, Mac OX, Android, iOS and many other mainstream computer and mobile device operating system.

HDD Low Level Format Tool (AKA: HDD LLF Low Level Format Tool, short for HDD LLFT) is an tiny HDD low-level formatting tool for Windows. Lightweight but powerful and helpful, with very important and significative purposes.

Crossword Sage is a free, open source and cross-platform (based on JRE) crosswords intuitive maker, designed to help you build and publish your own professional and good looking crossword game.