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Top 11 C# search-engine Projects
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ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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DBreeze
C# .NET NOSQL ( key value, object store embedded TextSearch SemanticSearch Vector layer ) ACID multi-paradigm database management system.
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Project mention: Show HN: Create a vector space as a file (three files, really) | news.ycombinator.com | 2025-12-16
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Project mention: The open source DOCX editor submitted to HN a few weeks ago has been deleted | news.ycombinator.com | 2026-06-26
Early this year, a dev posted a link to a C# search engine that got a lot of comments on Reddit. I lost the link and then re-found it and no development had occured since the launch. Someone left a single comment "It's because some corporate rights dispute bullshit".
So I forked the project immediately. (https://github.com/lofcz/Infidex)
I wonder if they will come after me too if it gets taken-down. Please fork.
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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RarbgAdvancedSearch
Rarbg Advanced Search is an advanced search tool for the popular torrent site Rarbg
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Typeahead-Search-Engine
A real-time suggestion service, which enable users to search for known and frequently searched terms.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# search-engine discussion
C# search-engine related posts
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Show HN: Create a vector space as a file (three files, really)
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Language model search built on vector database and anything key/value store
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Need a better way to organize documents in massive nas
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Ask HN: May I sell the copyright to my code?
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I built an advanced search system for my data. Like ElasticSearch. But I was considering using a third-party service like this that's cheap. Is ElasticSearch or another service in Azure ideal for this?
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Z-Library. Never get scammed for textbooks again.
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Opensuse KDE questions (arch refugee)
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Oct 2026
Index
What are some of the best open-source search-engine projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | RavenDB | 4,001 |
| 2 | SmartImage | 1,358 |
| 3 | DBreeze | 581 |
| 4 | resin | 578 |
| 5 | Examine | 412 |
| 6 | Infidex | 257 |
| 7 | artadosearch | 198 |
| 8 | Winton.AspNetCore.Seo | 72 |
| 9 | RarbgAdvancedSearch | 37 |
| 10 | Typeahead-Search-Engine | 4 |
| 11 | OdinSearch | 3 |
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ReSharper is now available in VS Code and Cursor
ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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