khashabawy

This WordPress Twitter plugin posts updates from your blog to your twitter account when you create a fresh post 
auto shorten URLs with TLI.TL url shortener

tli.tl auto Twitter poster

This WP Twitter plugin auto posts updates from your blog to twitter, auto shorten URLs with TLI.TL url shortener

TomHarrigan

titopandub

Tom Ewer

Unfortunately this plugin is not currently being actively supported. We recommend this as an alternative: https://wordpress.org/plugins/tweet-old-post/
Evergreen Post Tweeter enables you to schedule and automatically tweet out links to old posts.
Your Twitter followers will thank you for exposing them to more of your great content and you will get even more traffic to your site! I recently boosted Twitter referrals to my site by approximately 250% with Evergreen Post Tweeter. Enjoy!
Features:
<ul>
<li>Schedule by day and time, just like Buffer</li>
<li>Tweet out posts and/or pages</li>
<li>Filter posts to be tweeted by category and/or tag</li>
<li>Filter posts by age</li>
<li>Add additional text to the tweet</li>
<li>Choose from a selection of URL shorteners</li>
</ul>
If you have any comments or questions you can find me on Twitter @tomewer!
Evergreen Post Tweeter is forked from the excellent Tweetily plugin developed by Flavio Martins, which in turn is a reloaded version of Tweet Old Post by Ajay Matharuajay.

Evergreen Post Tweeter

I have been using Evergreen Post Tweeter for the past 3 weeks and it has been great. I ran into ZERO problems with it. 
Here is a video review on the plugin and its usage https://www.youtube.com/watch?v=iu3SnpNaMDI
If I had a wishlist it would be able to:
- Have multiple tweets per post, specified in the post
- Have multiple beginning text that randomly rotates
Those 2 things would make the plugin the best, and would make everything look manual.



Works as advertised, best in class...

Evergreen Post Tweeter enables you to schedule and automatically tweet out links to old posts.

tli.tl auto Twitter poster vs Evergreen Post Tweeter