Thank you fro your reply and interesting publications i am gone check them.

I am working on LCA case studies for industrial manufacturing. I know Simapro is the best but i wanted to check if openLCA is accepted as well. 

I am working with Simapro and OpenLCA. I use the same databases and characterization methods.  It's a great tool for me.

I have been using openLCA for years, and many nice features have been added over that time. I think that it is entirely reliable for scientific work. As mentioned before, It is an alternative to SimaPro or Gabi into which you can import the databases you need.

Note that it is a cross-platform software, that is, you can use it on Windows, Mac and Linux (which is great since I use Linux as my everyday operating system). 

Please have a look at the paper below. It was all done using openLCA (and other open-source software).

Article Influence of high gravity process conditions on the environm...

Thank you all for your contributions and comments.