Indx is a high-performance, RAM based, embeddable search engine for 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 complicated servers or infrastructure.

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.

• What makes indx different from other search engines?

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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

How Indx works

Why develop with Indx?

Changelog

GDPR and privacy statement

Lead Generation and Data protection Policy

Community & resources