1. Electronic Health Records (EHR) & Hospital Information Systems
Major EHR Platforms
OpenMRS: Global open-source EHR platform for resource-constrained environments
Modular architecture, used in 60+ countries
Strong global health focus, HIV/TB program management
GNU Health: Hospital management and EHR system
Includes modules for genetics, laboratory, surgery
Used in public health systems worldwide
FreeMED: Practice management and EHR system
OpenEMR: Most widely adopted open-source EHR
ONC-certified, Meaningful Use compliant
Used by thousands of practices globally
Hospital Management Systems
Bahmni: Built on OpenMRS for hospital information systems
Integrated with OpenELIS (lab) and OpenERP (financials)
HOSxP: Popular in Thailand and Southeast Asia
DHIS2: Health management information system (more than just EHR)
Used in 70+ countries for aggregate health data
2. Medical Imaging & PACS
Picture Archiving and Communication Systems (PACS)
Orthanc: Lightweight, RESTful PACS server
DICOM standard compliant, plugin architecture
DCM4CHEE: Enterprise imaging platform
Full-featured PACS, RIS, and image management
OpenREM: Radiation dose monitoring system
XNAT: Imaging informatics platform for research
DICOM Viewers & Processing
OHIF Viewer: Web-based zero-footprint DICOM viewer
React-based, extensible architecture
3D Slicer: Medical visualization and analysis
Advanced image processing, surgical planning
Horos: MacOS DICOM viewer (based on OsiriX)
Weasis: Java-based DICOM viewer with web capabilities
3. Public Health & Surveillance
Health Information Systems
DHIS2: District Health Information Software
The world’s largest health management information system
Used for aggregate data, analytics, and visualization
OpenHDS: Open Health Data Services for longitudinal cohort studies
Go.Data: WHO’s outbreak investigation tool (field data collection)
SORMAS: Surveillance, Outbreak Response Management & Analysis System
COVID-19 Response Tools
CommCare: Mobile data collection platform (open core)
OpenSRP: Smart Register Platform for frontline workers
COVID-19 Registry: Open source patient management systems
4. Laboratory Information Systems (LIS)
OpenELIS: Global lab information system
Supports public health laboratories
SENAITE: Modern LIMS built on Plone
Sample management, reporting, QC
Bika LIMS: Web-based laboratory information management
GNU Health LIMS: Laboratory module within GNU Health
5. Telemedicine & Remote Care
HAPI FHIR: Healthcare API for interoperability
OpenTelehealth: Platform for remote monitoring
LibreHealth EHR: With telemedicine modules
Simple telehealth solutions: Jitsi Meet integration for video consultations
Bluetooth COVID-19 contact tracing apps: Many open source implementations
6. Genomics & Bioinformatics
Analysis Platforms
Galaxy: Web-based platform for computational biology
Accessible bioinformatics for non-programmers
GATK: Genome Analysis Toolkit (now open source)
Industry standard for variant discovery
Bioconductor: R-based bioinformatics packages
Visualization & Management
IGV: Integrative Genomics Viewer
CROMWELL: Workflow management system
DNAnexus (open core): Cloud-based genomics platform
7. Clinical Decision Support & AI
CDS Systems
OpenCDS: Clinical decision support platform
Knowledge management and decision engine
Inferno: ONC’s testing tool for FHIR standards
Clinical Quality Language (CQL): Standard for expressing clinical knowledge
Medical AI/ML Frameworks
MONAI: Medical Open Network for AI (based on PyTorch)
NiftyNet: Deep learning platform for medical imaging
3D Slicer with AI extensions
TensorFlow/PyTorch with medical imaging extensions
8. Interoperability & Standards
FHIR (Fast Healthcare Interoperability Resources)
HAPI FHIR: Leading Java implementation
FHIR Server for Azure: Microsoft’s open implementation
Smile CDR: Commercial with open community edition
Firely: .NET FHIR implementation
Other Standards Implementation
OpenHIM: Health information mediator for interoperability layers
Mirth Connect: Interface engine (open source version available)
OpenID Connect & SMART on FHIR: For authentication/authorization
9. Mobile Health (mHealth)
ODK (Open Data Kit): Mobile data collection
CommCare: Community health worker platform
OpenSRP: Mobile platform for frontline workers
Collect.earth: For geographic data collection
RD Client: RedCap mobile alternative
10. Pharmacy & Medication Management
OpenPharmacy: Dispensary management
HospitalRun (pharmacy module): Now part of Medplum ecosystem
OpenEMR’s e-prescribing: Integration with SureScripts
Pharmacogenomics tools: Open source implementations
11. Dental & Specialty Care
Open Dental: Practice management software
GNU Dental: Part of GNU Health
Ophthalmic EHRs: Several open source options
Behavioral health systems: Like OpenBeds for psychiatric care
12. Research & Clinical Trials
Clinical Research Platforms
REDCap: Web-based electronic data capture (free for non-profits)
OpenClinica: Clinical trial software
LabKey Server: Biomedical research platform
Caisis: Cancer data management system
Data Science & Analysis
i2b2 (Informatics for Integrating Biology & the Bedside): Clinical data warehouse
TransMART: Translational research platform
OHDSI/OMOP: Observational health data sciences initiative tools
13. Government & Global Health Initiatives
National/Regional Systems
India: National Digital Health Mission open source components
Norway: FHIR-based national infrastructure
Vietnam: OpenMRS-based national HIV system
South Africa: DHIS2 for national health data
Global Collaborations
WHO’s Digital Health Toolkit: Open source recommendations
Mozilla’s Open Source COVID-19 Data Project
UNICEF’s RapidPro: Open source communication platform
14. Development Frameworks & Tools
Healthcare-Specific Frameworks
Medplum: Open source FHIR server and components
FHIR.js: JavaScript FHIR library
Fhirbase: PostgreSQL-based FHIR storage
Clinical Fast Healthcare Interoperability Resources (C-FHIR)
General OSS in Healthcare IT
Kubernetes/Docker: For healthcare application deployment
PostgreSQL/PostGIS: With healthcare extensions
Elastic Stack: For healthcare analytics and monitoring
Keycloak: For identity and access management
15. Notable Projects & Case Studies
Impactful Implementations
OpenMRS in Kenya & Rwanda: National-scale HIV treatment programs
DHIS2 in Tanzania: National health management information system
Bahmni in Bangladesh: Hospital system for low-resource settings
GNU Health in Spain: Regional public health implementations
Innovative Projects
Project Buendia: Field hospital EHR (used in Ebola response)
HospitalRun: Modern web-based hospital system
MedFlux: Open source medical device integration
