Freedom251 › Data Visualization Software

Chemiscope

Free plan APISelf-hostedWeb

What Chemiscope is

Chemiscope is a free, open-source web tool for exploring materials and molecular databases and examining relationships between structures and their properties. Its interface combines a 3D chemical structure viewer with an interactive 2D or 3D scatter plot. Properties can control plot axes, colors, and point sizes, while selecting a plotted point reveals its structure and selecting a structure identifies its plotted point. The viewer can color atoms by atomic properties and show force vectors or tensor ellipsoids. Documentation describes dynamic loading and plot resampling for databases containing up to hundreds of thousands of structures. For maps above 50,000 points, adaptive resolution shows fewer points while zoomed out and adds points during zooming. A Python package creates Chemiscope JSON inputs and supports notebooks in Jupyter, JupyterLab, VS Code, marimo, and Google Colab. Datasets can be embedded in Streamlit or Sphinx documentation, shared as JSON, loaded from public URLs, or distributed as standalone HTML. The offline HTML viewer does not handle compressed .json.gz files.

Who it suits

Chemiscope suits researchers and software projects working with materials or molecules. It is also useful for people who need interactive notebook, documentation, or web-based visualizations.

What it does well

Free and open source under the BSD license
Combines 3D structures with interactive 2D or 3D plots
Supports Jupyter, JupyterLab, VS Code, marimo, and Colab
Can embed visualizations in Streamlit and Sphinx
Handles databases of up to hundreds of thousands of structures

What to know first

Standalone HTML does not support compressed .json.gz files
Large maps show only a subset while zoomed out
No separate native desktop platform is listed

Plans

Plan	Billed and limits	Price
Chemiscope	Free and open source · BSD 3-Clause license	Free

As chemiscope.org lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Chemiscope brings linked structure and property views into a free, open-source workflow. Its notebook integrations, embedding options, and large-database features make it suited to research visualization, with compressed JSON files excluded from the offline viewer.

Facts from Chemiscope's own pages

Atom data: The structure viewer can color atoms by atomic properties and display additional data such as force vectors and tensor ellipsoids. · chemiscope.org, 11 Oct 2026
Dashboard type: interactive · chemiscope.org, 23 Sept 2026
Embedding: Chemiscope can be embedded as a component in Streamlit applications and in Sphinx or Sphinx-Gallery documentation. · chemiscope.org, 11 Oct 2026
Free plan: Yes · chemiscope.org, 23 Sept 2026
Integrations: The notebook widget works in Jupyter, JupyterLab, VS Code, marimo, and Google Colab without a separate frontend extension installation. · chemiscope.org, 11 Oct 2026
Large-map limit: For datasets with more than 50,000 points, adaptive resolution displays only a subset while zoomed out and adds points as the user zooms in. · chemiscope.org, 11 Oct 2026
License and audience: Chemiscope is free and open source under the BSD license, and is presented for research and software projects involving materials and molecules. · chemiscope.org, 11 Oct 2026
Offline limitation: The standalone HTML visualizer supports JSON files but not compressed JSON files ending in .json.gz. · chemiscope.org, 11 Oct 2026
Platform: web · chemiscope.org, 23 Sept 2026
Property display: Properties can be mapped to plot axes, color, and point size; users can select points to show corresponding structures and vice versa. · chemiscope.org, 11 Oct 2026
Purpose: Chemiscope interactively explores materials and molecular databases to help researchers find structure-property correlations. · chemiscope.org, 11 Oct 2026
Python: The Python package creates Chemiscope JSON inputs and provides functions to show datasets interactively in notebooks. · chemiscope.org, 11 Oct 2026
Scale: The documentation says Chemiscope is designed for databases of up to hundreds of thousands of structures, with dynamic structure loading and plot resampling. · chemiscope.org, 11 Oct 2026
Security: The opened official pages do not state security certifications, compliance claims, or a security policy. · chemiscope.org, 11 Oct 2026
Sharing: Users can share datasets as JSON files, load them from public URLs in the online viewer, or distribute an offline standalone HTML visualizer. · chemiscope.org, 11 Oct 2026
Support: The project README directs users to open a GitHub issue or email the developers for help. · github.com, 11 Oct 2026
Visualization: It combines a 3D chemical structure viewer with an interactive 2D or 3D scatter plot of associated properties. · chemiscope.org, 11 Oct 2026

Where Chemiscope stands on Freedom251

Data Visualization Software#46 of 98