yonat

This widget is similar to the standard Recent Posts widget, but adds the author name after the post title.
It is fully localized to any language supported by WordPress (by reusing WordPress own text domain and its existing messages).

looknear

Simple but powerful coupon generator. Use with caution. 
Creating multiple coupons with unique codes – from single source coupon. 
Easy solution and better results, while paying nothing! 
Was created because other similar alternatives – cost something. 
Feel free to donate anything between nothing to something 🙂
<h3>Why we need it?</h3>
In case you want to create the same coupon multiple times and to give multiple codes to your clients. 
This plugin will help you do it!

Coupon Bulker

This plugin does everything it promises, efficiently, and the prefix addition and bulk deletion options are nice to have. The interface could stand some work, and maybe the author will, over time, add new features - like coupon organization (categories and tags), and duplication of custom/3rd party coupon meta data, but this is a great start in any event.

Works well, no issues

Coupon generator : Duplicating a single source coupon multiple times & generate multiple codes. Download all codes in CSV format too.

Recent Posts With Authors Widget vs Coupon Bulker