We reviewed the RAW photo editor LightZone almost a year ago, when the Linux version of the product was a closed source -- but free -- download. After months of updates only for the Mac OS X and Windows versions of the application, Light Crafts has released a new beta for Linux. It is a substantial improvement -- but it also marks the end of the road for the free edition.
You can download the LightZone 3.3 beta from the Try LightZone page on the corporate site. The company offers basic info on the Linux edition, and recommends that you have at least Java 1.5 installed in order to run LightZone.
The 3.3 beta is limited to a 35-day trial period, but does not lock out any of the application's features. The download is a 56MB tar archive; because the app is Java-based, you can unpack and run it from anywhere with the command sh ./LightZone.