ChemEZ

Don’t just read it.
See the chemistry.

Your desktop AI chemistry tutor. Molecular structures, reaction schemes, and electron movement, drawn right into the explanation.

Get ChemEZ ↓See it in action ↗

Free for Mac, Windows and Linux · Bring your own API key · Open source

ChemEZ desktop workspace with a benzene-to-chlorobenzene synthesis question, mechanism mode, chat history, and structure library.
ONE QUESTION. AN ANSWER YOU CAN SEE.CHEMEZ DESKTOP
ChemEZ explains how acetone and methylmagnesium bromide produce tert-butanol, with a drawn reaction and molecular formulas.

A reproducible sample answer, rendered through ChemEZ and RDKit.

FROM A MOLECULE TO A MECHANISM

Chemistry has a visual language.

ChemEZ brings it into the conversation.

01 / STRUCTURES

Start with the molecule.

Validated 2D drawings, IUPAC names, molecular formulas, interactive 3D exploration, and PNG exports.

02 / REACTIONS

Follow the transformation.

See reactants, products, reagents, and conditions together in a readable reaction scheme.

03 / MECHANISMS

Follow the electrons.

Explore resonance contributors, lone pairs, formal charges, and curved arrows showing electron movement.

Your question. Your pace.

Switch between Quick Answer, Explain, and Mechanism modes. Adjust the learning level, attach a chemistry image, or activate a slash command for focused help.

Your model. Your workspace.

Connect NVIDIA, Gemini, OpenAI, Anthropic, OpenRouter, or a compatible endpoint. Search past chats and revisit saved structures. An optional image reader can work alongside your chat model.

TAKE CHEMEZ FOR A SPIN

Made for your desktop.

The chemistry runtime comes bundled. No separate Python or Node.js installation.

Mac · Apple SiliconmacOS 14+ · DMGMac · IntelmacOS 14+ · DMGWindowsWindows 10 / 11 · x64 setupLinuxx64 · AppImage

Version 0.1.3 · Unsigned builds. Read the release notes and opening instructions before installing.

ChemEZ offers new versions in the app, at most once a week.

SHA256 checksums ↗

THREE STEPS TO YOUR FIRST STRUCTURE

Open. Connect. Ask.

  1. 1Install ChemEZ for your platform.
  2. 2Connect a model in Model & API.
  3. 3Try “Show benzene’s resonance contributors.”