Search is a much needed discovery tool on any website. Doesnt mean that it has to be costly. With search technology maturing, Expertrec offers a high quality search experience at an affordable cost.
Wondershare PDFelement - All-in-one PDF editor
Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.
Apache Solr - Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...