If you are looking for a webserver to run on an ESP8266 using the FreeRTOS SDK the httpserver_raw server in the contrib-1.4.1.zip file is worth a look.
It compiles and runs using the Unofficial Development Kit for Espressif ESP8266 under Cygwin64 on Windows 7.
The zip file is located at: http://download.savannah.gnu.org/releases/lwip/.
