Ketcher is a web-based chemical structure editor.
You can easily integrate Ketcher into your web application. The process of integration is very simple and well-documented.
Ketcher is under active development. You can post us your comments and suggestions and get timely replies from the developers’ team.
Ketcher supports the standalone mode in which no server support is required. In this mode, SMILES loading, automatic layout and automatic atom-atom mapping are not available.
Scalable Vector Graphics (SVG) for rendering¶
Automatic layout (clean up), AAM (atom-to-atom mapping) and (de)aromatization¶
Ketcher delegates these computationally intensive procedures to the Indigo toolkit on the server side.
Supported file formats¶
Fast and convenient editing. We strive to make Ketcher as easy to use and as fast as the state-of-the-art desktop structure editing tools. See Editing Tips for details. Here are some highlights:
Lasso and Rectangle selection tools, plus a special Fragment selection tool to deal with connected components, rather than single atoms/bonds.
A variety of hotkeys.
Stereochemistry. Ketcher provides complete stereochemistry support during the editing, loading, and saving of chemical structures.
Reactions. Full-featured reaction support including reacting centers, atom flags and AAM.
S-groups. All major S-group types are supported including generic, SRU polymers, multiple groups, superatoms and data S-groups.
R-groups. R-site and R-fragment assignment is supported, as well as attachment point specification and R-logic.
The complete functionality of Ketcher has been tested on the following browsers:
Internet Explorer 6+
The current icon set was taken from Tango Desktop Project
Right now the new version of Ketcher is developed. It includes modern interface, good performance and lot of useful features.
On the backend Ketcher 2.0 uses Indigo Service
You can already try the Ketcher 2.0 demo But please be informed, that it is unstable and not all browsers are supported
Copyright © 2010-2019 LifeSciences unit of EPAM Systems, Inc.
Ketcher version 1.0 was released under GNU Affero General Public License v3.0 Ketcher version 2.0 was re-licensed under Apache License, Version 2.
This program is free software: You can redistribute it and/or modify it under the terms of the the Apache License, Version 2.0.
You should have received a copy of the Apache License along with this program. If you did not not, please see https://www.apache.org/licenses/LICENSE-2.0
Do you need assistance using our tools? Do you need a feature? Do you want to send a patch to us? Did you find a bug? Please use Github tickets package:
The Apache License v2.0 allows Ketcher to be used as a component in proprietary software products.
If the Apache License v2.0 does not fit your needs, please contact us to discuss the purchase of a commercial license. You may need the commercial license if you want to:
Receive ongoing support and maintenance
Design and implement custom changes for the structure editor
Do any other development/testing required for a proprietary software product
Visit our SolutionsHub page for more details