Website, crawler, parsing engine and data tools: Lee Grainger
Website crawl and parse scripts: Paige Potter
Third Party Tools
SQL Database: Microsoft SQL Server
NoSQL Database: MongoDB
Search Engine: Solr
Solr Client for .Net: SolrNet
Tutorial Plugin: jquery tour
JSON Library: Json.NET
Wikipedia Metadata: DBpedia, Yago and Freebase
Many thanks to Craig Dunn for his excellent article Populating a Search Engine with a C# Spider.
Thanks to Mauricio Scheffer for his tireless work developing and maintaining SolrNet.