DNN Advanced Search Add-on allows you to tailor your DNN portal' search results to help users find the most relevant content by means of advanced filtering created through custom forms.
This product is a sub module of DNNArticle. It allows you to build Filter Search web site based on DNNArticle. It can work with DNN 6.1+ including DNN 8.x.
psSiteSearch is a search engine module for your DNN website, Office and PDF documents. It is a direct replacement for the built-in search engine and gives real results. It is based on Lucene.net and includes a web spider which is used to crawl and index your site.