SubstanceWiki – Open-source encyclopedia of psychoactive substances
SubstanceWiki is a free, open-source encyclopedia of psychoactive substances with a harm reduction focus. Site: https://substancewiki.org Source: https://github.com/yagcioglutoprak/substance_wiki The database covers 381 substances with structured data including dosage tables by route of administration, duration timelines, 14,967 interaction safety ratings, 240+ catalogued subjective effects, experience reports, and community insights aggregated from Reddit. Tech stack: Next.js 16 (App Router), PostgreSQL via Prisma, Tailwind CSS. Content is CC-BY-SA 4.0. The…
SubstanceWiki – Open-source encyclopedia of psychoactive substances launched on March 8, 2026 with 5 votes, #1,928 of 23,380 launches that month and more than 75% of that year's launches. The site was not reachable when checked in September 2026.
What it does
SubstanceWiki is a free encyclopedia of psychoactive substances built for harm reduction. It covers 381 substances with dosage tables, duration timelines, 14,967 interaction safety ratings, 240+ subjective effects, experience reports, and community insights. One interconnected reference instead of 15 open tabs across different sites. Built with Next.js and PostgreSQL. All content is CC-BY-SA licensed.
In the maker’s words, at launch
SubstanceWiki is a free, open-source encyclopedia of psychoactive substances with a harm reduction focus. Site: https://substancewiki.org Source: https://github.com/yagcioglutoprak/substance_wiki The database covers 381 substances with structured data including dosage tables by route of…
Does a similar job
all alternatives →
35k+ paper psychedelic library that knows LSD from Lumpy Skin DiseaseAug 2026 · consciousnesslibrary.org · ▲31An open library of psychedelics and consciousness research. Plain-language summaries with study design and sample size, free to read.
- HHallucinopediaMay 2026 · halupedia.com · ▲317
An encyclopedia of a universe that does not exist until you visit it.
Synapedia — Psychoactive SubstancesMar 2026 · synapedia.com · ▲1Explore pharmacology, receptors, effects and interactions
I mapped 8.5M research papers into an interactive atlasJul 2026 · tomesphere.com · ▲85When I read papers, I have to jump between multiple tabs to find the dataset, code, videos, peer reviews, and so on. I tried to fix this with this project. It started as a project just for papers on arXiv, but after its initial success on Twitter (got like 1.9k views: the most I have gotten for a post), I have now expanded it to include other openly available papers from PubMed Central, bioRxiv, medRxiv, and eLife. These papers have been linked with their genes, proteins, diseases, drugs, clinical trials, 3D protein structures, code, and cited and similar papers. This project now has four…
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 3d ago · permit.petercai.com
- IV
Life & fun · 15d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 16d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 10d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 14d ago · carrierexplode.com
Life & fun · 24d ago · space.bl2.net
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, March 2026
the whole month →
Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com
Littlebird▲709Littlebird remembers everything across your meetings, messages, docs, and apps, then takes action so you can recall any detail and never lose context.
AI · Mar 2026 · littlebird.ai
