A quiet place for biology.

3D interactive cells, organelle-aware notes, and a growing set of learning tools. KaTeX-free for now — browser-only, no signup.

23D tools
12cell specimens
freeno signup

Featured

◎ Cell Atlas 3D 12 cells, organelle-aware 3D DNA DNA Viewer 3D Double helix from any sequence

Coming soon

More biology tools on the roadmap. Have a request? Drop it on GitHub.

❖ Mitosis Phase-by-phase walkthrough Gᵣ Punnett Square Monohybrid + dihybrid crosses aa Codon Table mRNA → amino acid 𝓗 Hardy-Weinberg Allele frequencies 🌿 Food Web Trophic level simulator

Frequently asked

Currently the Cell Atlas 3D — a 3D interactive viewer for twelve cell types (plant, animal, neuron, bacteria, white blood, red blood, epithelial, muscle, cardiomyocyte, sperm, yeast, virus). More tools (DNA viewer, mitosis, Punnett square, Hardy-Weinberg, food web, codon table) are planned and listed in the sidebar.
Yes. Every tool here is free, browser-only, and requires no signup. The 3D models load once and run on your device using WebGL.
Three cells (Animal, Neuron, Bacteria) use real GLB models from the NIH 3D Print Exchange under their CC BY-NC-SA 4.0 license. The other four use procedural Three.js geometry tuned per cell type.
Yes. The sidebar collapses into a drawer on narrow screens, the tool's interior layout stacks vertically, and OrbitControls accepts one-finger rotate / two-finger pan / pinch-zoom.