I want to draw a picture of a plasmid, something along the lines of this image. i have tried all of the free software i could find does anyone have any suggestions of software that would produce an image this good, preferably free but I'll pay if I have to.
13 answers
If you're willing to use HTML syntax, you can design something pretty close using http://angularplasmid.vixis.com. It's free, open-source, and comes with plenty of examples of how to create what you're looking for. See below for examples:


The best-known software for this kind of task is commercial, namely DNASTAR's Lasergene Seqbuilder and Invitrogen's Vector NTI.
Free alternatives are e.g. Serial Cloner or the open-source software GENtle.
This is probably not what you are looking for, but if you want a hands on coding solution, Biopython's Genome Diagram can do something a bit like that. There is a basic example in the Tutorial.
SnapGene Viewer will do the trick.
PlasMapper does a pretty good job too
I'm surprised Circos hasn't been mentioned so far. The microbial genome recipe could be a good starting point.
Late to the post but........A great, but unfortunately paid option is Geneious. I used that in my thesis to make beautiful plasmid maps.
Gene Construction Kit® (GCK) is a useful tool for plasmid mapping, cloning simulation, and DNA analysis. It has been consistently reviewed as being one of the easiest to use applications for simulating multi-step cloning operations, and offers extensive flexibility in the graphical formatting of DNA sequences - and - generating those colorful, customized plasmid maps seen in publications. You can easily copy and paste graphical maps from GCK to image editing programs, or even create hi-res PDF (Mac) or XPS (Win) exports from within the program.
It's been around since the mid-90's, and was one of, if not "the very first software" for performing these types of graphical manipulations of DNA sequence data.
More information, and a free demo version is available from the website: http://www.textco.com
Check it out!
Another great free alternative is Genome Compiler.
Sapio Sciences Exemplar Electronic Lab Notebook bronze edition is free to academics and is a full featured ELN.
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