Open Concept Lab is an open-source terminology management system
OCL provides real-time electronic access to terminological resources and straightforward integration with independent software platforms.
OCL Online helps you to collaboratively manage, publish, and use terminology in the cloud alongside the global community.

Blog
Upcoming Event: OCL Office Hours on November 3
Join OCL on November 3 from 9-10 a.m. (EDT) / 1-2 p.m. (UTC) for the next Office Hours event. At this event, all OCL users, community members, and those interested in these tools are invited to attend and bring questions and ideas to share with others on the call. This is an open, casual session...
CIEL: Bridging Terminology for the Global Community
This blog written by Dr. Andrew Kanter, an Asst. Prof. of Clinical Biomedical Informatics and Epidemiology at Columbia University. He directs the Columbia International eHealth Laboratory. He is also a senior advisor and former Chief Medical Officer for Intelligent Medical Objects, the premier...
Basics of Collection Management in OCL – New Video Series Released
The OCL Community has launched a new and helpful video series all about OCL Collections. These videos will help you to understand what Collections can do and how you can build and manage them in OCL. It also includes demonstrations of Collection creation and management in the OCL TermBrowser....
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OCL Features
Open Source
Cloud Based
Community Driven
Standards Based
LMIC Focused
Featured Projects

Ethiopia NHDD
The National Health Data Dictionary (NHDD) captures the definitions of data elements, indicators, and the relationships between these elements to improve the MOH’s ability to manage data recording and reporting guidelines and to harmonize data across many stakeholders.

Columbia International eHealth Laboratory
The Columbia International eHealth Laboratory (CIEL) dictionary is a shared open concept dictionary.

PEPFAR DATIM
The Metadata Sharing Platform (MSP) was launched in 2020 to provide users within the U.S. President’s Emergency Plan for AIDS Relief (PEPFAR) data exchange and interoperability community access to metadata for indicators defined in the Monitoring, Evaluation, and Reporting (MER) Indicator Reference Guide.