Tesseract - Tesseract is an optical character recognition engine for various operating systems
Optimizely - A/B testing you'll actually use.
GOCR - GOCR homepage. GOCR is an OCR (Optical Character Recognition) program, developed under the GNU Public License.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
TextGrabber - Office & Productivity
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.