JChemPaint

JChemPaint is computer software, a molecule editor and file viewer for chemical structures using 2D computer graphics.^[1] It is free and open-source software, released under a GNU Lesser General Public License (LGPL). It is written in Java and so can run on the operating systems Windows, macOS, Linux, and Unix. There is a standalone application (editor), and two varieties of applet (editor and viewer) that can be integrated into web pages.

JChemPaint

JChemPaint displays a chemical structural skeletal formula.
Original author(s)	Christoph Steinbeck
Developer(s)	The CDK Project
Initial release	2000; 25 years ago (2000)
Stable release	3.3-1210 (September 24, 2012; 12 years ago (2012-09-24)) [±]
Preview release	3.4-beta (March 11, 2025; 51 days ago (2025-03-11)) [±]
Repository	github.com/JChemPaint
Written in	Java
Operating system	Windows, macOS, Linux, Unix
Platform	Java SE
Available in	English
Type	Chemoinformatics
License	LGPL
Website	jchempaint.github.io

JChemPaint was initiated by Christoph Steinbeck and is currently being developed as part of The Chemistry Development Kit (CDK), and a Standard Widget Toolkit (SWT) based JChemPaint application is being developed, as part of Bioclipse.

See also

• Free and open-source software portal

• List of molecular graphics systems
• Comparison of software for molecular mechanics modeling