A modern search engine with zero configuration

Add enterprise-grade search to your .NET application without servers or setup

Indx uses a fundamentally better matching model: Identifying patterns in text instead of relying solely on exact word matches

Embeddable

Moves in with your .NET codebase

Full toolkit available

End-to-end with .NET and React

Schema-less JSON workflow

Built-in type detection, nesting support, and simple field setup.

Field configuration
Field name and typeSearchableFilterableFacetableSortable
Title
String
Description
String
Actors
Array
Genre
Array
Rating
Number
ReleaseYear
Number

Index and search in a few lines of C#

Point Indx at your JSON, mark a few fields as searchable, and run your app.

csharp
using Indx.Api;
var engine = new SearchEngine();

// ANALYZE AND INDEX JSON
FileStream fstream = File.Open("movies.json", FileMode.Open, FileAccess.Read);
engine.Init(fstream);

engine.GetField("title")!.Searchable = true;
engine.GetField("description")!.Searchable = true;

engine.Load(fstream);
engine.Index();

// SEARCH
var result = engine.Search(new Query("matrix", 10));

Handle more real-world search behaviour with far less tuning

Drop an ultra-fast, pattern-based search engine directly into your .NET codebase
Pattern-based matching
Returns relevant search results automatically, even with messy or distorted input.
Great for AI agents
Fast structured retrieval for agent workflows and hybrid RAG pipelines.
Native C# engine
A fully embeddable search engine with no dependencies.
Zero tuning
No tokenizers, analyzers, or configs. Simple levers when you want control.
Blazing fast
As much as 200× faster than traditional search engines.
Boosts e-commerce sales
Smarter relevance leads to better product discovery and more conversions.
Split-word understanding
Handles combined and separated word forms automatically.
Battle tested
Trusted in high-load, high-volume production environments.

Community

Free

No usage limits. No feature gating.

Ideal for developers, startups, and teams who can self-support through documentation and community resources.

  • Community support
  • Open Source developer toolkit
  • Full production use allowed

Professional Support

€ 250/month

Priority support from the Indx team

Great for teams building applications where reliability matters.

  • Priority e-mail support
  • Integration & deployment guidance
  • Influence future priorities

Enterprise SLA

Contact us

Guaranteed response times and dedicated support.

For mission-critical workloads. We'll ensure your search application succeeds.

  • Direct engineering access
  • Uptime SLA & guaranteed response times
  • Azure deployment assistance
Book a meeting