Are there any commercial off-the-shelf products that can help in the bidding/tendering process? I know Ariba, Coupa can, but we are looking for a tool that can help oil and gas downstream companies with these capabilities, especially on the sales side than purchase side. 

I am interested in seeing the results.  They may come into play as we continually look to improve processes and remove risks, as applicable.  The process we have are more manual and are in the form of templates leveraging Microsoft tools.  Previous employers (retail) used Coupa.