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

  • USPTO
  • Cisco
  • Career Builder
  • O'Reilly

Partners

  • 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

What is Learning To Rank? Elizabeth haubert on February 24, 2017

We walk through Learning to Rank, which uses machine learning to improve the relevance of search results.

Solr UTF-8 Character Handling Elizabeth haubert on February 20, 2017

This article investigates Solr support for non-ASCII utf-8 characters.

We're Bringing Learning to Rank to Elasticsearch Opensource connections on February 14, 2017

Announcing the Elasticsearch Learning to Rank Plugin: Bringing machine learning into Elasticsearch to improve search relevance.

Come see Doug at Elastic DC Meetup March, 29th | Rosslyn, VA

Doug will highlight the Elasticsearch Learning to Rank plugin OSC has developed. Jason Kowalewski will discuss use cases related to personalized job search & recs.

Talk directly with Eric Pugh, our founder & CEO
(434) 466-1467 | eric@o19s.com