Top 20 NuGet search Packages

A .NET library to search files based on globstar pattern (ant like)
A BK tree implementation for fast, fuzzy string matching. Check out the code and usage instructions on the github page (see package information/project URL link).
Algolia Analytics Client for .NET
AutoCompletion and WordSearch extension for StackExchange.Redis
Toolset to analyze Google search results. Need HtmlAgilityPack to be installed.
Sofenia search engine's common library (managed). Go to https://github.com/theconnectionist/sofenia.apps
jQuery DataTable DTO
This package contains the Office SharePoint Tools for the SharePoint Client Side Object Model libraries for 2013 (on-premises)
A simple, configurable query logger for ASP.NET Framework applications.
This library allows you to easily interact with nuget feeds either over the network or locally. You can search, download, and copy package contents
EntryAutoComplete is a custom control with functionality that provides you with suggestions while typing. There are several modes of suggestions. The suggested text can be displayed in a drop-down list so that you can choose from different options.
Coub Search API C#/.Net Core wrapper
k-Nearest Neighbors Search Algorithm, based on the RBush data structure
Search Results via SERP API. Hash, JSON, and HTML format supported for Google, Bing, Baidu, Yandex, Ebay, Google Product, Youtube, Wallmart and more...
A property editor and content app to assist with tagging content and searching content against the tags. Create a data type using the Taxonomy property editor, and add a field of that tag data type to a content page. For Usage Instructions watch the video for this package at the project ...
A directory factory implementation for Examine to store the primary index files in Blob storage and syncing them to the local fast drive.
Unofficial (by Take) strongly typed interface to Elasticsearch. Fluent and classic object initializer mappings of requests and responses. Uses and exposes Elasticsearch.Net