Open Source C# Search Engines

EverythingToolbar is an open-source Windows utility that integrates Voidtools’ “Everything” file search directly into the Windows taskbar search bar. It mimics the look and feel of Windows 10/11 search and offers seamless real‑time file search powered by Everything. EverythingToolbar includes common search filters out of the box. For advanced users, it can synchronize with Everything's custom filters, giving you complete control over your search experience. Enable this feature by checking Use Everything filters in the EverythingToolbar's Filters settings. Easily toggle search flags (match case, whole word, match path, and regex) to find your files with precision. Create custom Open with actions by navigating to Settings → Custom actions. Enable Automatically apply rules based on condition to execute commands automatically based on file type and regular expressions. Leave the regex field empty to display the action only in the context menu.

The stuff here has no documentation and some of it may never be completed. This is my playground, use at your own risk.

FileSearch is a multi-threaded documents searcher. No indexes need to be updated ; no background service is required. The more you have drives the more search speed is increased thanks to its multi-threading technic.

Geoportal Server is a standards-based, open source product that enables discovery and use of geospatial resources including data and services.

DocLib is a Web-based Document Management System implemented in ASP .NET technology to facilitate documents finding in Full Text Search, Directory Browsering, Search by document summary,by Catagory/Attribute , and by Virtual Directory.

MultiSearch is a simple and fast search engine able to concatenate and organize multiple results. Easy to customize for the end users.

The Rainbow project is an open source initiative to build a comprehensive content management system using Microsoft's ASP.NET and C# technologies. It has ASP.NET 1.1 and ASP.NET 2.0 code bases.

The aim of this project is to develop client software for PubSub.com's XMPP-based JEP-60 publish-subscribe system.

TomoSearch is a new generation search tool developed based on the idea of Collaborative Search. Sometime it is also called Search 2.0. We try to make a Collaborative Search engine better than now exist CSEs system to fill the real need of users.

OpenWebSpider is an Open Source multi-threaded Web Spider (robot, crawler) and search engine with a lot of interesting features!

The Anywhere Location Search allows for location searches using a wide range of inputs (address, city/state, zip code, search string, IP address, landmark name, etc).

A federated search application for discovering interesting files that are being shared online, such as video, music, books, software, games, subtitles and much more. All data is crawled by od-database which collects information about the contents of servers worldwide. We don't search file contents. We host no content, we provide only access to already available files in the same way Google and other search engines do.

A toolkit for crawling information from web pages by combining different kinds of "actions". Actions are simple operations such as navigation to a specified url or extraction of text from the html. Also available is a graphic user interface.

NzbSearcher is a windows client for SABnzbd which integrates it with various UseNet (nzb) search sites. Check website below for changelog. Currently supported NZB search sites: NZBindex.nl, NzbMatrix.com, YabSearch.com and NZB.su

You want to find free proxy, but it is so hard to do it manually? Just try Burd's Proxy Searcher program. It is looking for list of proxies in Internet with using of public search engines, checks if those proxies works in your Internet segment, gathers additional information. If you want to be anonymous and don't want to spend much time for manual search then this program was developed especially for you. Tags: the free proxy, proxy list, proxies, proxy for free, proxy providers

A drop-in framework for adding tagging (folksonomy) capabilities to existing applications

Unlock Google's potential. Use this application to find infomation that is more relevant to your search... This application allows enhanced searching on Google without the need for long modifiers etc..

People Connection Art Portal. To connect Art creators and Art consumers.

This is BBO i.sh.an.

New C# framework for HTML scrapping and form submitting. Fetch HTML from site and fill form fields programmitically and then send them back to server. Save session between application and web server and HTML analyzer.

A feed harvesting service made for collecting direct links to reviews, as well as a webservice exposing the collected data.

The Completion of CMS.NET the CMS built in Stephen R. G. Frasers book Real World ASP.NET: Building a Content Management System. For those of you who have read the book know its a good beginning but there is still a long way to go.

CodeBrowser.net is a sourcecode and file browser that crawls different (version controlled) sources, displays the content and makes it searchable over http.

Crawler.NET is a component-based distributed framework for web traversal intended for the .NET platform. It comprises of loosely coupled units each realizing a specific web crawler task. The main design goals are efficiency and flexibility.

Port of the Google sitemap generator, from Python to Csharp aka C-Sharp aka C# aka .NET aka dotNet.