Aldar and Emaar Properties, the UAE's two largest real estate developers, have formed a strategic alliance to develop Dh30 billion worth of local and international projects, a sign of a maturing property market, according to analysts. The agreement, signed on Tuesday by Sheikh Mohammed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Armed Forces, and Sheikh Mohammed bin Rashid, Vice President and Ruler of Dubai, is by far the biggest collaboration between developers from different emirates.