Dear Vishal,

If you are dealing with known structures, X'Pert Highscore is OK for searching in a database of deposited structures, obviously if you have access to a database. Otherwise, if you deal with new phases, then you should index your patterns from scratch, fitting the profile and using the peak positions as input for an indexing program like TREOR or DICVOL, for example.

Thanks Hassan and Marco for your answers

I usually deal with both known & unknown crystal structure.

let me try first with these you have suggested

hi

you can use chekcell program for indexing 

http://www.ccp14.ac.uk/tutorial/lmgp/achekcelld.htm

a software called MATCH will be useful for you

Vishal sir, what is your email ID?

assigning h k l planes are not sufficient, you have to confirm crystal system and lattice parameters. Further, if necessary, positional  parameters refinement by Rietveld refinement method using Fullprof suite program.

I suggest to use Fullprof and reitveld refinement. To the list of proposed programs for indexing (DICVOL and TREOR) you can try also FOX http://fox.vincefn.net/

powder X

you can use GSAS I, X'Pert Highscore,  Powder X, Fullprof

with the powder database "Match" you can have two months free licence 

Jiangwei Zhang. Could you help me for this software? I have to do for my samples containing Fe.W and Mn oxides. I shall be thankful to you.

Here found a additional tool, find the attachment.