Hi,
Here is a very basic breadboard adapter for the popular ESP8266 WiFi-to-Serial transceiver module (ESP-01 model). It makes prototyping easier by providing breadboard friendly pin arrangements with clear pin names printed next to them.
(http://http://embedded-lab.com/blog/wp-content/uploads/2014/12/ESP82663.jpg)
You can download the Eagle files from here:
http://http://embedded-lab.com/blog/?attachment_id=9865
It is also available for purchase on my Tindie Store here (if anybody interested):
http://https://www.tindie.com/products/rajbex/esp8266-breadboard-adapter/