Elastic also seems to be a good option like Golem,but whats the major difference between two?
If you check out the thread, the dev has given good comparisons between the project and every other project that is aiming to do similar things.
The new website and some technical documentation is going to be released soon for elastic. Keep an eye out

EDIT: Here is the link to the comparison site for elastic, gridcoin, golem, eth, zen, volt -
http://elastic-project.com/comparison_with_other_solutions This isnt my opinion. But it does seem pretty accurate