Charity Engine grid is now the world's cheapest, greenest and (until we paused due to melting servers) fastest-growing computing platform, with 100k+ monthly active PCs providing 500k-1m core-hours daily, plus 100k+ IP addresses for uniquely powerful web-crawling.
Most importantly, it literally scales on demand.
Whenever our new online adverts are active, it grows by 15k PCs every day - and that's not even at full blast, it's just what our servers can cope with. We ran the adverts for six weeks, switched them off when our servers maxed out, and the grid still has 100k+ PCs six months later - for a total spend of $15k.
Our CPA for compute resources is over 100x lower than purchasing from AWS - if AWS could supply 100k nodes with 100k IP addresses. Our next step is to make CE the biggest computer on Earth, literally.
Profits are split 33-33-33 between prizes for the public, CE itself and the charities (Oxfam, CARE, MSF, etc) - hence the name.