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As is often the case with young languages, the question has been asked of the Clojure Community "Who's using Clojure?"

This pages intends to answer that question!

If you would like to get your story on this page, send an email with a brief (one paragraph) description of how you've used Clojure to Optionally, send along an image and a link that we can post alongside the description.



Akamai has created a digital operating environment for the Web. Our global platform of thousands of specially-equipped servers helps the Internet withstand the crush of daily requests for rich, dynamic, and interactive content, transactions, and applications. When delivering on these requests, Akamai detects and avoids Internet problem spots and vulnerabilities, to ensure Websites perform optimally, media and software download flawlessly, and applications perform reliably.

Citigroup, the leading global financial services company, has approximately 200 million customer accounts and does business in more than 140 countries. Through Citicorp and Citi Holdings, Citi provides consumers, corporations, governments and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

Geni is solving the problem of genealogy by inviting the world to build the definitive online family tree. Using the basic free service at, users add and invite their relatives to join their family tree, which Geni compares to other trees. Matching trees are then merged into the single world family tree, which currently contains nearly 50 million living users and their ancestors. Pay services include enhanced research tools as well as keepsake products created from family tree data. Geni welcomes casual genealogists and experts who wish to discover new relatives and stay in touch with family. Geni is privately held and based in Los Angeles, California.

Revelytix uses semantic web technologies to build products for data integration and emergent analytics in enterprises and federal systems. The company's flagship project uses Revelytix technologies to integrate many data sources in one of the largest federal domains and provide analytics for key decision-makers. Revelytix has three products built entirely in Clojure: Spyder (for dynamic SPARQL to SQL translation using R2RML mappings), Spinner (for SPARQL federation), and Rex (for RIF-based rule execution). These three products are all at their core about symbolic manipulation of queries, ontologies, or rules and we have found Clojure to be an excellent match for those problems. Clojure allows us to build high-level abstractions that work at the level of the problem. We also have gotten tremendous gains from being able to integrate with and reuse the vast wealth of Java libraries available on the JVM.