<p>Dear All,</p>

<p>I would like to know about few docking softwares, freely available ones.</p>

<p>Thanks</p>

Honestly, depends on which *docking* you are talking about. The mechanics of the software (i.e. the algorithms, scoring functions) depend on its purpose. If you want to do protein-protein docking, Autodock might not be the best option. For protein-ligand docking, it might. You also have protein-nucleic acid, protein-glycan, multiple proteins, etc.

Autodock is a good option for protein-ligand docking. If you want an overview for protein-protein/DNA/etc docking, have a look at these reviews: [1][1], [2][2]. Nearly all that software is free for academic use.

 [1]: http://www.ncbi.nlm.nih.gov/pubmed/19462412
 [2]: http://onlinelibrary.wiley.com/doi/10.1111/febs.12771/abstract