Independent software · open infrastructure
Systems for care, knowledge, and agency.
I am a medical doctor who builds practical software around difficult constraints: clinical safety, evidence, privacy, resilience, and trustworthy AI.
Explore the work
Selected work
Ten projects, one through-line.
Technology should remain useful when conditions are imperfect—and legible when the stakes are high.
Cairn
An offline-first, vendor-independent electronic health record built to keep working through outages.
cairn-ehr.org 02 Open drug knowledgeDrugRef
An open, vendor-independent drug-information service for EHRs, pharmacy systems, and applications.
drugref.org 03 Biomedical evidenceBM Librarian
A multi-agent system for biomedical literature research, citation checking, and evidence synthesis.
bmlibrarian.org 04 iPhone & iPadMedical Fact Checker
A native app for checking health claims against biomedical literature with the help of AI.
View on the App Store 05 Trustworthy AIKastellan
A personal autonomous agent designed from the ground up around mechanical and semantic boundaries.
kastellan.dev 06 Private dataLocalmail
A read-only local archive for IMAP accounts, built for private search and bounded agent access.
mylocalmail.org 07 Private AIBottie
A local-first desktop AI companion with durable memory, visible context, and native security boundaries.
bottie.org 08 LearningThe Primer
A voice-first, Socratic AI learning companion for children, designed to run fully offline.
primer-ai.org 09 Collaborative intelligenceConsensus
A collaborative intelligence platform where people and AI models use structured analytical methods to test evidence, disagreement, and conclusions.
consensus-ai.org 10 Popular scienceThe Inhabited Body
A two-volume exploration of the human microbiome and the organisms that help shape our health.
book.inhabitedbody.com








