It's not about giving them a job or anything.
It's more about the problem that they are blocked due to capital controls and transaction restrictions.
In fact they even can't pay hosters or domain registrars anymore.
Not because they haven't got the money, it's because they can't do transactions.
That's why you can help by offering them your SaaS service for free and in the future we add more stuff to the page to help connecting greek startups who needs help with these basic costs and people / companies which are willing to help.
It's really only about supporting them to get through this crisis and keep the basic operations up and running.
(Sorry for the english, I'm not a native english speaker ;) )