Review on A-Parser by Aaron Collins

The ease to use, it's very fast in parsing large volumes of data from different sources (URLs). It also has an easy way for adding new fields or modifying existing ones without having to modify source code. I like that you can easily add your own custom field types as well by using JSON files. You should give this software a try if you are looking at other open sourced parsers out there such as Apache Lucene! We were able to extract keywords related with our products within minutes instead of months when we used another product which was not so user friendly.