BKchem 0.12.0_02

BKchem is a free chemical drawing program. BKchem was concieved and written by Beda Kosata.
BKchem is written in Python, an interpreted and very nice programming language.
Main features:
Drawing
- bond-by-bond drawing
- bond lenght and angle restrictions to assist with the drawing
- ready to use templates of common rings
- ability to expand common groups from abbreviated to structural form
- radicals, charges...
- arrows
- rich text
- color support
- simple vector graphics (rectangles, circles, polygons etc.)
Editing
- unlimited undo and redo capabilities
- aligning
- scaling
- rotation (2D, 3D)
- aligning of molecules so that particular bond is horizontal/vertical
- rotation of molecular fragments around bonds (conformation changes)
- definition of personal preferred drawing style (bond lenghts, widths, colors...)
Export
- full export to SVG (native data are transparently embedded into SVG file)
- full export to OpenOffice Draw format
- full export to Encapsulated PostScript
- basic support for both CML1 and CML2
- Molfiles
- generation of SMILES
Import
- basic support for both CML1 and CML2
- Molfiles
- SMILES (subset)
- INChI (subset)
Other features
- localization support (currently English, French, Czech and Polish translations are available)
- native format is XML based
- validity checking of drawn structures
Whats New in 0.11.6 Stable Release:
- In this release, two major bugs were fixed: one in the German translation (causing a crash when a file was saved) and one in the OpenOffice export plugin.
- A few other minor bugs were also fixed.
Whats New in 0.12.0_02 Development Release:
- This release fixes several bugs, most importantly incompatibility with Python 2.5.