DebiChem Chemical Formula/Structure Editors packages

BKchem 是一个免费的化学绘图程序，用 Python 编写。

您可以预期的一些功能：

• 绘图(逐键绘图；常见的环结构模板；常见的原子团扩展；绘制激发状态、电荷、箭头； 支持着色...)
• 编辑(无限撤销、重做功能；比对；缩放；旋转(二维或三维)...)
• 导出/导入(完美支持 SVG-、OpenOffice.org-画图-、EPS-导出；基本支持 CML1 和 CML2 导入、导出)

Chemtool is a GTK+ based 2D chemical structure editor for X11. It supports many bond styles, most forms of text needed for chemical typesetting and splines/arcs/curved arrows.

Drawings can be exported to MOL and PDB format, SVG or XFig format for further annotation, as a PiCTeX drawing, as a bitmap or as Postscript files (several of these through XFig's companion program fig2dev).

The package also contains a helper program, cht, to calculate sum formula and (exact) molecular weight from a chemtool drawing file. Cht can either be called directly by Chemtool or on the console.

EasyChem 是一个帮助您创建高质量分子图形及二维化学式的软件，能够将其导出为 PDF，PS，LaTex 及 fig 格式。

EasyChem 原初的开发目的是为化学图书创建图表，而现在则经常在商业和非商业的化 学相关图书中使用该用途。

GChemPaint is an editor for 2D chemical structures with a multiple document interface. Drawn molecules can be searched at NIST Webbook and PubChem.

OSRA is a utility designed to convert graphical representations of chemical structures, as they appear in journal articles, patent documents, textbooks, trade magazines etc., into SMILES (Simplified Molecular Input Line Entry Specification) - a computer recognizable molecular structure format. OSRA can read a document in any of the over 90 graphical formats parseable by ImageMagick - including GIF, JPEG, PNG, TIFF, PDF, PS etc., and generate the SMILES representation of the molecular structure images encountered within that document.

Xdrawchem is a 2D editor for chemical structures and reactions. It mirrors the abilities of the commercial ChemDraw suite and has file compatibility with it as well as other chemical formats through OpenBabel.

This packaged version comes from a fork available at https://gitlab.com/yamanq/xdrawchem, as the previous version was no longer actively maintained. More information about it in the copyright file.