Software · Education & science

Coot

Macromolecular model builder.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: GPL-2.0+ & GPL-3.0+ & LGPL-3.0+ — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Official plan pages (pricing, licence, terms), Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Paul Emsley
Latest version: 1.3.4 (20 October 2026)
Latest activity: 7 November 2026
Source code: github.com/pemsley/coot

At a glance

Coot is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-2.0+ & GPL-3.0+ & LGPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Coot is a powerful macromolecular model-building tool for analysing X-ray data and models (i.e. proteins, ligands, RNA and DNA). There are many tools for model manipulation and building, such as minimization, molecular superposition, fragment rotation/translations, rotamer-fitting, de novo building and refinement. Coot is used by scientists using X-ray crystallography or cryo-EM for analysis of proteins, electron density maps, protein interactions and drug design.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 9 November 2026
Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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