I would try ChemDraw, ChemBioDraw, or ChemBioOffice, etc., all from the same company (cambridgesoft, which is now owned by Perkin Elmer) There is a range of products with different capabilities and prices. The Office version has a 3-D modelling program included, formerly called Chem3D but now called ChemBio3D, and this is also available separately. https://www.cambridgesoft.com/Ensemble_for_Chemistry/ChemDraw/ is the website for the chemistry drawing program, and you can navigate to the other versions. This software was first developed on a Mac and has run on both Mac and PC for quite a while (and now runs on the iPad). I have used it essentially since it was first released (I don't remember when- late 1980s maybe?) and recommend it wholeheartedly. I do not have any financial connection to the company.

Thanks James,

I forgot to mention that I would use it privately and maybe 1-3 times a year so I think it's not worth buying a software that would cost 600-1400 dollars. Trying to find free download software.

Thanks again

That does change things. However, my institution, which is large and spread over a number of campuses, buys a site license every year, so the cost for an individual per year is considerably less than $100. That is practical for some, but not for all.

As for truly free software, Jmol is an open source program that can be used to display proteins, nucleic acids and small molecules for free. See:

http://wiki.jmol.org/index.php/Websites_Using_Jmol

for free websites based on Jmol. You can also program with Jmol if you like. Best wishes.

I would suggest you can use Chemaxon Marvin Sketch, which is free for academic research and teaching.

Mr. Bahram,

ChemOffice Ultra is among the best 2D and 3D softwares:

http://scistore.cambridgesoft.com/chemoffice/

May be Chem Word is also can help you its a good software that can use with word office and you can get more information in facebook page:

https://www.facebook.com/groups/186300551397797/

Best regards

// salah

Thank you dear colleagues for all the suggestions. I'll see what I can find now and test them suggestions that you have given.

Thanks

Sincerely