Food Processor nutrient analysis software includes omega-3 in its nutrient database. More information about this nutrition software can be found at http://www.esha.com.

KIM (Keep It Managed) is another software program that provides omega-3 information. Omega-6 content is also included. KIM can be downloaded from http://efaeducation.nih.gov/sig/ods.html.
To help you download and install KIM, you may want to download this KIM.pdf before starting.

The USDA Food Composition Database, found at http://www.nal.usda.gov/fnic/foodcomp/Data/index.html, will provide information on omega-3 fat content of foods. You may also put the USDA Database on your PDA.

Omega-3 fats in fish
Choosing Fish for Nutrition, Safety, and Sustainability