JSPspEmu Git (2014/05/12) is released. JSPspEmu is a PSP emulator made using javascript (actually typescript). It will work with any modern browser. Though the first version work only works with Chrome (desktop and android). At this point it can run some demos.

JSPspEmu Git Changelog:
- small update
- updated dropbox oauth
- small fixes for dropbox
- Added dropbox support
- Updated interface
- Added support for saving

Try online: JSPspEmu Git (2014/05/12)
Source: Here