Useful Links
Other Chemistry Toolkits and Software:
Find information about chemicals:
http://www.chemspider.com/
Find reactions:
http://cssp.chemspider.com/
Calculations:
https://www.sigmaaldrich.com/technical-service-home/web-tool-box/unit-converter.html
Converter:
http://openbabel.org/wiki/Main_Page
http://www.sisweb.com/software/csw/gcmsfile.htm
Free NMR-tools:
http://www.acdlabs.com/resources/freeware/nmr_proc/
Databases:
Spectral Database:
http://sdbs.db.aist.go.jp/sdbs/cgi-bin/cre_index.cgi
Ruby (on Rails)
http://tryruby.org/levels/1/challenges/0
http://rubyonrails.org/documentation/
http://it-ebooks.info/read/162/
RegEx Application
http://rubular.com/
http://www.regular-expressions.info/ruby.html
http://code.tutsplus.com/tutorials/ruby-for-newbies-regular-expressions--net-19812