Indx is a high-performance, embeddable search engine for .NET developers working with structured data. Built from the ground up for speed, scale, and ease of use, Indx delivers the fastest search performance on the market — and it does so without servers, infrastructure, or compromises.

Whether you're building a modern SaaS platform, a high-throughput microservice, or a lightning-fast local app, Indx is designed to drop in and just work.

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New major v4 release is coming Q2 2025.

v4.0 is now available as a public Release Candidate

v4.0 with JSON workflow

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Current APIs

C# .NET API with linked class library v3.3

Rest API v3.3

API


Futher reading

Why Indx for .NET

Changelog

GDPR and privacy statement

Lead Generation and Data protection Policy

Community & resources

For more information visit indx.co