Erick Hitter

WordPress 3.0 introduced a native shortlinks feature, which builds URLs using query strings. This plugin converts those URLs to ones using pretty permalinks, which makes for a nicer-looking URL and improves shortlinks’ ability to be cached.
Posts and pages are supported by default, while filters make it possible to support other post types.
For example, https://example.com/?p=123 becomes https://example.com/p/123/.

ETH Simple Shortlinks

Convert WordPress's query-based shortlinks to pretty permalinks that are cacheable. https://example.com/?p=123 becomes https://example.com/p/123/.

Kostas Vrouvas

Get the classic “Get shortlink” from WordPress 3.7. Developed to make it easier for people at <a href="https://mentorinculture.com/" rel="nofollow ugc">Mentor</a> to get shorlinks and open sourcing it.
To-do:
<ol>
<li>Connect with Bit.ly API</li>
<li>Options menu to add Bit.ly API keys</li>
</ol>

Get Shortlinks

Get the classic "Get shortlink" from WordPress 3.7. Developed to make it easier for people at Mentor to get shorlinks and open sourcing it.

ETH Simple Shortlinks vs Get Shortlinks