Urban acid for the Gimp

“urban acid” is a popular Photoshop plugin by Steve Almas, circa 2005 [src] that creates a bright, saturated effect [examples] that some Gimp users are trying to reproduce. [discussion]

There are a few ways to do this.

There’s an urban-acid plugin in the GIMP registry that simulates a kind of bright, cross-processed effect. Another GIMP script tries more to emulate the Photoshop effect of the same name. [src]

You can also reproduce the effect by going through the various steps outlined in tos/swobodin/">swobodin's tos/swobodin/1261325306/">tutorial on Flickr, which does not require installing any new plug-ins.

Search for more attempts at doing “urban acid” in the Gimp.