We build powerful

Search solutions

Our Elasticsearch and Solr experts provide professional consulting and tailored application development.

Search services»

We wrote the book on

Search relevance

What good is search if you can never find anything? We're pioneers in smarter search that "gets" users.

Learn about relevance »

We are passionate

Industry leaders

We've spoken at conferences from San Diego, to NYC, to Dublin. Our blog is read by industry experts.

Blog  |  Events  |  Podcast

We're the relevance experts

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

We wrote Relevant Search, the definitive guide to building 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 »

Products and services for smarter search

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 »

Want to just understand why results are showing up in your search?

Use splainer for free »

Selected Clients

  • Cisco
  • Career Builder
  • O'Reilly


  • Elastic
  • Datastax

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

Reflective Search Relevance Testing Doug turnbull on May 4, 2018

Exploring a method of search relevance testing that doesnt suffer from drawbacks of clickstreams or expert user judgments

How to Implement a Normalized Discounted Cumulative Gain (NDCG) Ranking Quality Scorer in Quepid Bertrand rigaldies on February 26, 2018

A guide on how to implement, test, and deploy a Normalized Discounted Cumulative Gain (NDCG) ranking quality scorer in Quepid.

Solr Multiterm Synonyms: avoiding sow=false surprises Doug turnbull on February 20, 2018

We document some of the behaviors behind Solr's relatively new sow=false strategy for parsing queries and dealing with query-time synonyms

Come see Elizabeth at Cognitive Computing Summit - Learning To Rank May 22-23rd, 2018 | Boston, MA

Learning to Rank (LTR) is now available for both Solr and Elasticsearch. Why is this such a hot topic? What does an organization need to leverage a Learning to Rank solution? Liz explains the LTR pipeline in terms of what is available as an off-the-shelf solution and what isn't. She discusses the challenges faced when implementing LTR and some open research areas moving forward.

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