Here are over 20 homebrew resources, utilities, emulators, and more. Make sure to visit some of the download resource sites to learn how to install these items.
Emulators
ColEm PSP - Reaching way back into video game history, you can now enjoy your favorite ColecoVision games with this emulator.
Daedalus PSP - A Nintendo 64 emulator that even allows you to save your progress at any point in the game.
DGen - An emulator for the Sega Genesis. Page is in Japanese, but the download is marked and it has an English read me file.
NeoCDPSP - A popular emulator for the old Neo Geo gaming system.
NesterJ - An emulator for the original Nintendo Entertainment System (NES) games. Please note that the page is in Japanese and this is a translated page, but the download is clearly marked.
Snes9xTYL - Super Nintendo Entertainment System game emulators for the PSP.
Homebrew Resources
Dark-Alex.org - Dark Alex is probably the best known member of the PSP homebrew community, having released numerous custom versions of firmware.
PSP.Brewology.com - Features downloads, pack generators, a wiki, forums and more.
PSP-Hacks.com - Besides homebrew files, they also have saves, backgrounds, extremely active forums and more.
PSP-Homebrew.eu - Features a huge selection of programs for homebrew ready PSPs, including multiple versions where available so you can find the perfect one for the OS version you are running.
PSPSlimHomebrew.com - Site dedicated to the PSP Slim version of the player. Has downloads, reviews and general news applicable to the system.
PSPUpdates.qj.net - Huge repository of PSP homebrew news and downloads.
Music
MP3 Player - Just as the name implies, this is a simple MP3 player for the PSP.
PSP Rhythm - An audio sequencer allows you to mix up to 16 sounds at once. You can also export their completed works as CD-quality wave files.
PSPRadio - Allows you to stream SHOUTcast radio stations via your PSP.
PSPSeq - PSPSeq allows you to compose up to 16 separate channels of music, tweak instruments, play it back, and several other features for music composers out there.
Utilities
AFKIM - The AFKIM (Away From Keyboard Instant Messenger) allows you to use instant messengers like Yahoo, MSN, ICQ and more directly from you PSP.
PSP-PDA - Gives you numerous PDA functions on your PSP such as a music player, image viewer, address book, calendar and more.
PSPoste - Well-known email client that supports IR keyboards and has numerous features.
PSPTube - Allows you to add YouTube to your PSP.