Free · open-source · no sign-up
A second opinion on cancer treatment — free, cited, and open.
Enter a case and OpenOnco lays out two treatment plans side by side — a standard option and a more aggressive one — with a source you can open under every line. Built on NCCN, ESMO and CIViC. Pick your path below.
Plan Builder evaluates clinical rules in your browser. Tumor Board sends submitted text to a server and may use a configured model provider. Use synthetic cases without identifying details; individual care decisions require a qualified clinician.
Open-data inputs: CIViC (CC0), ClinicalTrials.gov, PubMed, DailyMed/openFDA and NCCN/ESMO/EHA/BSH guidelines. No LLM chooses treatment — plans are rules-first with YAML provenance (CHARTER §11).
In memory of Danya
I dedicate all my work on OpenOnco to my friend Danya, who died of lymphoma in August 2026.