Dear Azmi,

Given n>=1 is there a way in GAP to get a list of all the non-isomorphic groups
of size n ? at least for small values of n ?

The Small Groups Library of GAP provides a list of all groups of order at most
2000 except 1024. It also contains groups whose order factorize in a certain
way; For example, it contains all groups whose order is the product of at most
3 primes.

To use this library, please look at the functions SmallGroups( size, number ),
AllSmallGroups( size ) and their related functions in the manual. Also, the
corresponding identification function IdGroup( G ) might be useful in this context.

Hope this helps,
                Bettina