Backup Saved Games (BGS) by ekianjo is a small application which will check the presence of saved games for a number of set emulators and native games, and save them all together for you, automatically, in a single-file archive on your SD Card. Read more about Backup Saved Games (BGS) v0.2.3.1 (Pandora Application)
mooBoy by mrz is an open source Game Boy and Game Boy Color emulator for Pandora, still in beta phase. The compatibility rate is high, but there is still place for improvement. Read more about mooBoy v0.2.1.3 (GBC emu for Pandora)
Gmu is an open source music player. Gmu supports Ogg Vorbis, MP3, Musepack, FLAC and various module formats (such as s3m, stm, it, etc.). It also includes a playlist and a file browser. radon86 compiled it for the GCW Zero. Read more about GMU Music Player v0.9.1 (GCWZ Application Port)
ReGBA by Nebuleon is a Game Boy Advance emulator based ultimately on gpSP 0.9 by Exophase. The project is currently in alpha. This build is a preview for your consideration. Some features are missing and will be coded later. You can also submit patches on GitHub. Read more about ReGBA (Alpha 9) (GBA emu for GCWZ)