Is there a question in there? 

There is a market. But i would like sth like cyclos for example.

Dev to build User quota still very much required

All these functions are already defined in the elgg core, except #2 and #5. For #2 and #5, you need some custom coding either by yourself or you need to hire a dev.

That's why I made this post. I wish to hire a Dev. Those functions also need to be copied from the elgg core and made available elsewhere. I have funds standing by. Any takers?

This is now closed as the API has now been built. 

It can be a solution, but I´ve looked for a Stormpath SSO module for Prestashop and I have not found it. I´ve just sent a query to stormpath.com asking about it.

Thanks for the info @Rohit

We're know Elgg API. What about Prestashop API?

If Prestashop has it then we could make custom plugin.

If answer "No" then try the existed plugins, e.g. SSO etc

@Rohit, Stormpath replied to me and no module available for Prestashop.

@RvR, YES!, Prestashop has an API: http://doc.prestashop.com/display/PS16/Web+service+one-page+documentation#Webserviceone-pagedocumentation-Webserviceone-pagedocumentation. So can you help me?