Own your search

Smart search is core to your value: don't outsource it.

We help your org innovate in search and relevance. Whether it's Solr or Elasticsearch - let us empower your team!

What We Believe » | Our Services » | Our Expertise »

We wrote the book

Good search understands a user's intent, not just what they type.

We wrote Relevant Search to help teams build smarter Elasticsearch and Solr applications.

One of the best and most engaging technical books I've ever read. — Trey Grainger, Lucidworks
Will help you solve real-world search relevance problems for Lucene-based search engines — Dimitrios Kouizes-Loukas, Bloomberg

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Get help from the experts »

Democratizing machine learning for your search team  ↓


Pioneers in machine learning

We built Elasticsearch Learning to Rank, which powers search at Yelp, Wikipedia, Snag, and others.

Since deploying learning to rank, weā€™ve seen a net 32% increase in conversion metrics across our historically lowest performing use-cases. — Jason Kowalewski, Sr Director of Engineering at Snag
Learning to rank canā€™t stay hidden away in obscure academic journals or multi-million dollar products. Weā€™re making this stuff accessible to all search teams: opening up the black box for everyone to useā€. — Doug Turnbull - OpenSource Connections CTO

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Our Learning to Rank Services »

Tools that demystify search  ↓


We have the tools

We built Quepid, a search testing platform that takes the guesswork out of search relevancy.

Do NOT attempt a search project without it. — John Bickerstaff

Try it Now »


Just want to understand why results are showing up in your search?

Use splainer for free »

Search Relevance Community  ↓


We support the community

We run Haystack, the Search Relevance conference. We sponsor MICES, the E-Commerce Search conference.

We host a Slack Channel where practitioners support each other and share solutions.

The Next Haystack »
Join Relevance Slack »

Our Blog » Upcoming Events »

We empower some of the world's best search teams at:

  • USPTO
  • Cisco
  • Career Builder
  • O'Reilly
  • Wikimedia Foundation
  • Snag

Our publications

Relevant Search »
Learn the secrets of building intuitive, targeted search.

Elasticsearch course »
Dive into Elasticsearch and AngularJS in this video course.

Solr Enterprise Server »
We cowrote the first book on Solr. Now in its third edition.

The blog and other happenings

What happens at a Lucene/Solr Hackday Charlie hull on September 23, 2019

How we hosted and ran a Lucene Hackday in Washington DC the week of the Activate conference, and what attendees considered and achieved during the day

Announcing Relevance CornucopiašŸ¦ƒ - How Natural Language Search completes Learning to Rank Doug turnbull on September 11, 2019

Our next training event, Relevance CornucopiašŸ¦ƒ, we'll add the missing piece to the manual tuning & learning to rank picture: Natural Language Search. Come learn to build relevance that can be both optimized by machine learning AND understands user's natural language.

Diversity vs. Relevance in Search Systems Doug turnbull on September 5, 2019

Search systems struggle to balance diversifying the result set to match likely intents vs ranking against one well understood intent.

Come see Doug at Conversion Models and Query Relaxation at the Berlin Search Technology Meetup October 24th, 2019 | SoundCloud HQ, Rheinsberger Str. 76/77, 10115 Berlin, Germany

Doug Turnbull talks about Conversion Models: A Systematic Method of Building Learning to Rank Training Data and RenƩ Kriegler talks about Query Relaxation.

Talk directly with Eric Pugh, our founder & CEO
(434) 466-1467 | [email protected]