Credits
MEDOST is built on the work of many open-source developers, open-data projects and photographers. Thank you. This page lists them and their licences.
Software in MEDOST's server
| Project | Used for | Licence |
|---|---|---|
| Express | The web server | MIT |
| supabase-js | Database and sign-in | MIT |
| Helmet | Security headers | MIT |
| cors | Which sites may talk to the server | MIT |
| express-rate-limit | Fair-use limits | MIT |
| Marked | Formatting answers and pages | MIT |
| node-fetch | Talking to other services | MIT |
| resvg-js | Drawing posters and video frames | MPL-2.0 |
| jpeg-js | Reading and writing images | BSD-3-Clause |
| web-push | Notifications | MPL-2.0 |
| ts-fsrs (Open Spaced Repetition) | Smart revision timing | MIT |
| Remotion and React | Making MEDOST's videos | Remotion License (free for teams of up to 3) · MIT |
| Kokoro-82M and kokoro-js | The voice in MEDOST's videos | Apache-2.0 |
| whisper.cpp (with OpenAI's Whisper model) | Timing the captions in MEDOST's videos | MIT |
| FFmpeg, via ffmpeg-static | Making videos | GPL-3.0 |
Software in the website and app
These are kept on medost.app itself, unchanged, so the website never runs code from another site. Their licence texts: vendor/LICENSES.txt.
| Project | Used for | Licence |
|---|---|---|
| PDF.js (Mozilla) | Reading PDFs you attach | Apache-2.0 |
| JSZip | Reading Word and PowerPoint files | MIT |
| Mermaid | Flowcharts in answers | MIT |
| supabase-js | Sign-in | MIT |
| Android Browser Helper (Google) | The Android app | Apache-2.0 |
Fonts
| Font | Licence |
|---|---|
| Inter (Rasmus Andersson) | SIL Open Font License 1.1 |
| JetBrains Mono | SIL Open Font License 1.1 |
| Poppins (Indian Type Foundry) | SIL Open Font License 1.1 |
| DejaVu Sans | DejaVu Fonts License (free) |
Open data and images
| Source | Used for | Licence |
|---|---|---|
| Wikimedia Commons and Wikipedia | Medical images and diagrams | Each image's own licence (often CC BY-SA or CC BY), shown with the image |
| openFDA (US Food and Drug Administration) | Drug label facts | Public domain (CC0) |
| PTB-XL (PhysioNet) — Wagner P, Strodthoff N, Bousseljot R-D, et al. Scientific Data 2020 | Real 12-lead ECGs for reading practice | CC BY 4.0 |
| MedMCQA — Pal A, Umapathi LK, Sankarasubbu M. CHIL 2022 | Question bank (questions reworded and checked by MEDOST) | Apache-2.0 |
| Europe PMC | Finding recent research for "latest" questions | Free search service; each paper keeps its own licence |
| ClinicalTrials.gov (US National Library of Medicine) | Trials of new treatments | Public data |
Free textbooks we link to
Answers may end with a chapter to read more in a free OpenStax textbook (Rice University): Anatomy & Physiology 2e, Microbiology, Biology 2e, Psychology 2e, Chemistry 2e and Introductory Statistics 2e. MEDOST links to them; it does not copy them. They are licensed by OpenStax under Creative Commons licences.
Answers also link to the textbooks, guidelines and articles they draw on (for example StatPearls, WHO, NICE and PubMed), so you can read the original.
Services
MEDOST's answers are written with AI models from Google (Gemini), Groq, OpenRouter and Cloudflare, with web search by Tavily. MEDOST runs on Supabase, Render and Netlify; payments by Razorpay; email by Resend. These are paid or free services, not open source, and are named in the Privacy Policy.
Something missing?
If your work is used in MEDOST and isn't credited correctly, write to [email protected] and we'll fix it straight away.