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.
Mario & Luigi: Bowser's Inside Story (AKA: Mario & Luigi RPG 3!!!, マリオ&ルイージRPG3!!!, Mario ando Ruīji Āru Pī Jī Surī, 瑪利歐與路易吉RPG3!!!) is an RPG type of video game released by Nintendo for NDS handheld game console in 2009. As the third work in the Mario & Luigi RPG series, the former two are Mario & Luigi: Superstar Saga and Mario & Luigi: Partners in Time.
Citra (ANA: eMu3Ds) is currently the only still living 3DS emulator for Windows, Linux and Mac OS X (written in C++ and open source) that can can run partial 3DS classic games better. Although supporting all HD 3DS games has a long distance, yet from the official news we are sure this is not far off.