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CogStack

CogStack and related projects

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Unlock the power of healthcare data with CogStack AI.


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This GitHub organization hosts the open-source code for CogStack AI, including our core NLP pipelines, data workflows, and research tools.

  • Improve productivity and reduce clinical risk through better data with Deep Phenotypes and Search
  • Free-up staff time through health data insights from CogStack Language Models and Generative AI
  • Works with any digital health record system and interoperable to international data standards

Key Projects

NLP pipelines for healthcare, including the Medical Concept Annotation Tool (MedCAT) for entity recognition and linking.
CogStack NLP powers downstream analytics by structuring unstructured clinical data.


A collection of example workflows using Apache NiFi as the core orchestration engine.
These recipes connect NLP components and data services, supporting tasks such as Text Extraction, Natural Language Processing, and Secure Routing of Clinical Documents


Cogstack ModelServe (CMS) is a model-serving and model-governance system created for a range of CogStack NLP tasks. Targeting language models with NER and entity linking capabilities, CMS provides a one-stop shop for serving and fine-tuning models, training lifecycle management, as well as monitoring and end-to-end observability.


Research framework for deep generative modeling of patient timelines using Electronic Health Records (EHRs).
Enables exploration of predictive modeling and risk stratification through modern generative techniques.


Framework for building grounded instruction-based datasets and training domain-specific LLMs.
Focused on safe, explainable, and healthcare-aligned conversational AI.


🤝 Get Involved

We welcome contributions from clinicians, researchers, and developers passionate about healthcare AI.

  • Explore our repos and open issues
  • Share your ideas via discussions or feature requests
  • Join the mission to make healthcare data truly interoperable and intelligent

📄 License

Each project has its own license. Please check the relevant repository for details.

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  1. CogStack-NiFi CogStack-NiFi Public

    Building data processing pipelines for documents processing with NLP using Apache NiFi and related services

    Python 59 22

  2. MedCAT MedCAT Public archive

    Medical Concept Annotation Tool

    Python 531 122

  3. MedCATtrainer MedCATtrainer Public archive

    A simple interface to inspect, improve and add concepts to biomedical NER+L -> MedCAT.

    Python 85 36

  4. Foresight Foresight Public

    Deep Generative Modelling of Patient Timelines using Electronic Health Records

    Jupyter Notebook 77 16

  5. OpenGPT OpenGPT Public

    A framework for creating grounded instruction based datasets and training conversational domain expert Large Language Models (LLMs).

    Jupyter Notebook 371 45

Repositories

Showing 10 of 41 repositories
  • cogstack-jupyter-hub Public

    Custom Jupyter Hub Docker image with example notebooks

    CogStack/cogstack-jupyter-hub's past year of commit activity
    Python 2 5 0 7 Updated Sep 11, 2026
  • cogstack-nlp Public

    CogStack NLP, including the Medical Concept Annotation Tool MedCAT

    CogStack/cogstack-nlp's past year of commit activity
    HTML 79 Apache-2.0 15 0 3 Updated Sep 10, 2026
  • CogStack-NiFi Public

    Building data processing pipelines for documents processing with NLP using Apache NiFi and related services

    CogStack/CogStack-NiFi's past year of commit activity
    Python 59 22 0 1 Updated Sep 9, 2026
  • cogstack-platform Public

    Apps, tools and documentation for the cogstack platform

    CogStack/cogstack-platform's past year of commit activity
    JavaScript 3 2 0 4 Updated Sep 3, 2026
  • cms-client Public

    SDKs for interacting with the CogStack ModelServe APIs

    CogStack/cms-client's past year of commit activity
    Java 0 Apache-2.0 0 0 0 Updated Jul 31, 2026
  • CogStack-ModelServe Public

    A model serving and governance system for CogStack NLP solutions

    CogStack/CogStack-ModelServe's past year of commit activity
    Python 1 Apache-2.0 4 2 (1 issue needs help) 3 Updated Jul 30, 2026
  • ocr-service Public

    This is a python fast-api OCR service, attempting to resolve scalability and performance issues. It also relies on tesseract ocr but without the ambiguities of the Tika framework.

    CogStack/ocr-service's past year of commit activity
    Python 4 4 0 1 Updated Jul 30, 2026
  • cogstack-model-gateway Public

    A Gateway for accessing Cogstack ModelServe instances

    CogStack/cogstack-model-gateway's past year of commit activity
    Python 2 Apache-2.0 2 6 1 Updated Jul 29, 2026
  • fde-tech-task Public
    CogStack/fde-tech-task's past year of commit activity
    0 0 0 0 Updated Jul 17, 2026
  • dbt_mimic_omop Public

    A resource to convert the MIMIC-IV and MIMIC-IV note datasets into a standard OMOP format.

    CogStack/dbt_mimic_omop's past year of commit activity
    Python 5 3 0 0 Updated Jul 6, 2026

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