Sega Saturn PSP Emulator: SofiyaCa has ported Sega Saturn emulator Yabause over to the Playstation Portable. Frame rates aren’t that great as this is just a first release port. Also you’ll need a Sega Saturn bios to run this. Its not included in the release for legal reasons of course.

fMSX updated to version 3.4.5
Homebrew emulator devopler uberjack has released an update to his fMSX Emulator, fixes include:
MSXMUSIC and MSXAUDIO emulation can now be toggled on and off at any time
FDD (Floppy Disk Drive) controller activity indicator – displays an icon whenever the virtual floppy drive is busy
Optional hi-resolution renderer for screen modes 6, 7 [...]

Unofficial gpSP Kai v3.2 Test 07 released. Japanese emulator developer Takka has released Unofficial gpSP Kai v3.2 Test 07 (Gameboy Advanced Emulator). This newer version features a bunch of bunch fixes and slight improvements. This emulator is based on Exophases GBA emulator and as such, is an unofficial Port.

Download: Unofficial gpSP Kai v3.2 Test 07

Daedalus PSP R13 Released!
Yes you read that right, Daedalus PSP R13 has finally been released, the much awaited release of StrmnNrmn’s promising Nintendo 64 (N64) emulator. Grab it below
Download:

Daedalus PSP R13 for v1.00 Firmware (Works on PSP Slim)
Daedalus PSP R13 for v1.50+ Firmware

Changelog
R13 – 04 November 2007
———————-
[+"] Savestate support.
[^"] Improved dynarec load/store code [...]

StrmnNrmn has reported on his blog that Daedalus R13 (the PSP N64 emulator) Is due for release today.

“I’ve got a bit of polishing to do and a little bit more testing, but I’m hoping I should be able to release R13 sometime tomorrow (Sunday).”
So not too long to wait now then, just a few more [...]

NJ has released another update for his Capcom Play System Emulators and Neo Geo emulator to version 2.3.1. Improvements to video and sound emulation and several bug fixes on his almost perfect PSP emulators. No support yet for full screen TV output, I hope that NJ can implement this soon as I would love [...]

So Daedalus R13 is closer to release? StrmnNrmn has posted on this blog that the release of Daedalus R13 is close that he is currently working on the final touches of the new save state function and that hopefully we can expect a new release soon of his promising N64 emulator.

“I’m very close to releasing [...]

�Emulator developer Uberjack has updated his set of emulators to be compatable on PSP Slims�which can�t execute 1.50 kernel�s. There now written for 1.00 kernels which the PSP Slim can run without issues. Emulators include Handy PSP (Atari Lynx emulator we featured here a few days ago), Atari800 PSP, fMSX PSP, NeoPop PSP, SMS Plus [...]

Takka has also just released an update to Syn-k’s DGEN Sega MegaDrive / Genesis PSP Emulator, now it supports the Playstation Portable Slim and Lite. Other changes include support for compressed zip files.

Source: Takka

Takka has just recently updated the latest version of gpSP Kai to version V3.2 Test 05. This is the first Emulator to have support for full screen TV output. This release is an unofficial port to Exophases GBA Emulator. Takka has offered significant changes and continues to improve on Exophases work. There are more improvements [...]

Handy PSP 0.95.1 Lynx Emulator released:

PSP Emulator deveolper überjack has recently released Handy PSP 0.95.1 for the PSP. Handy PSP is other Lynx emulator and as of today the best I have seen. Emulation is very fast around 60fps with 0 frame skip and some games are 100%. A few games will have noise in [...]

Nintendo 64 (N64) Emulator for PSP | N64 Emulation on the PSP Slim. DaedalusX64 Alpha Revision 429

Description:
Latest DaedalusX64 Update. Many improvements and enhancements over the DaedalusX64 Beta 1. Enhanced Media Engine and built-in speed hack detection.
PSP Developers involved in this project: Chilly Willy, howard0su, Wally, and StrmnNrmn.
Changelog:

DaedalusX64 Alpha Revision 429
Developers note:
Upgrade Procedure: Grab the link [...]

Game Boy Advance (GBA) Emulator for PSP | GBA Emulation on the PSP Slim | UO gpsp kai 3.4 test 1 build 2

UO gpsp kai 3.4 test 1 build 2
Gameboy Advance Emulator for the PSP Slim. By far this is the best GBA emulator out there, I’ve tested this myself as it runs very fast, [...]

Please select below the PSP Emulator you require:
PSP Emulators, last updated: October 22nd 2009

Amiga PSP Emulator
Amstrad CPC PSP Emulator
Arcade Machine Emulators (CPS1 and 2, MAME and NEO GEO)
Atari 2600 PSP Emulator
Atari 7800 PSP Emulator
Atari 800/130XE/5200 PSP Emulators
Atari Lynx PSP Emulators
BBC Mirco Computer Emulator
Capcom Play System 1 (CPS1) PSP Emulator
Capcom Play System 2 (CPS2) [...]

There is a Lynx emulator working on PSP Slim, I think most people have over looked the old Atari Lynx hand-held. I for one haven’t. It was my first hand-held console. Back in 1989..The good old days. Yes its a while back and back then in 1989 the lynx was the most powerful hand-held out [...]

CPS1PSP and CPS2PSP updated to 2.2.3 NJ has once again released updates to both of his Capcom Play System emulators for the Playstation Portable, CPS1PSP and CPS2PSP.

What’s changed? Improved load times and both emulators have been compiled with GCC 4.10 which should give a slight speedup. Testing this myself I can confirm its faster [...]

Capcom Play System 1 & 2 Emulators and the Neo Geo Emulators were updated by NJ to version 2.2.2 today.
The update adds the ability to now use the “HOME” button to access the emulator menu during game play, as well as minor tweaks and various bug fixes.
Download:

PSPInt: Intellivision Emulator for PSP Slim v1.1.0

Zx-81 and Dr.Nicket have released an update for PSPInt, the Intellivision Emulator for PSP. This emulator now supports the PSP Slim 3.XX firmware.
What’s new in version 1.1.0 :

Compatible with custom 3.x firmwares (and i hope with psp slim)
Add Intro Splash screen
Support iso8859-1 fonts in print text [...]