You like Radical Image Optimization Tool ?
Then you can donate a little money if you use this program at work
or if you simply want to express your gratitude.
The program is portable. This means you can download RIOT as ZIP archive, extract and use. No install required.
Old version archive
(Contains an old verion that works with Windows 9x)
The latest standalone version can be downloaded also from these mirrors:
Plug-ins for RIOT
Even if RIOT is available as plug-in for other programs like IrfanView or GIMP, RIOT itself can be extended with plug-ins to enhance it’s functionality.
Currently only input plug-ins are supported. In the future I hope more plug-in types will be added.
Download the RAW + HDR plugin package – allows you to open HDR, OpenEXR and RAW camera images
Special notice to IrfanView users
IrfanView has bundled into the plugin collection the Lite version of the RIOT plugin.
Here you can find the extended version (also FREE) that goes beyond Lite version offering extended functionality.
I always recommend the extended version over the Lite one.
Read the difference between Lite and Extended
Reviews & articles
The Download Blog (cnet)
Graphics Optimization blog