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

Read the book »
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, we’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 can’t stay hidden away in obscure academic journals or multi-million dollar products. We’re making this stuff accessible to all search teams: opening up the black box for everyone to use”. — Doug Turnbull - OpenSource Connections CTO

Read the Press Release »
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

Announcing Relevance Cornucopia🦃 - How Natural Language Search completes Learning to Rank Doug turnbull on September 11, 2019

Our next training event, Relevance Cornucopia🦃, 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.

How You Can Use Hello LTR - The Learning to Rank Sandbox Doug turnbull on August 13, 2019

Hello LTR is a framework that lets you plugin your data to easily build and test Learning to Rank models in Solr or Elasticsearch. Try it Out!

Come see Charlie at TALMIRI - Talent meets IR Industry 18th September 2019 | University of Bedfordshire, UK

TALMIRI is a symposium to bring together talented early-stage researchers, academics and information retrieval industry with invited speakers in an iconic location in Bedfordshire, UK. Practioners and researchers, in particular but not exclusively PhD/MSc students and early-stage researchers, are invited to present (as poster or demo) their exciting search and information retrieval related work to IR experts and industry.

Charlie Hull of OSC will be presenting on Working in Open Source Search, giving attendees an insight into the sort of projects and technology he has dealt with over a 20 year career in search.

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