Hi, there are many other sitemap generator that generates form more that 2000 urls.
We have once used sitemap-xml site for our classified website and it was limited for 500 links but then we switched to other which offered more than 2000 links. The website we used for is http://www.yachha.com
. Yachha is Nepal’s local classified marketplace to buy-sell any new or used items like cars, furniture, motorcycles, camera, mobile phones,properties, find jobs and much more. People who want to sell things can simply post add at free of cost.