Jon Weatherhead

AJAX Comments Refueled allows for pages to be cached without needing to invalidate on new comments, and is useful for upgrading the default comment system to not rely on page refreshes for replying to comments.
This plugin is a zero-dependency implementation. This means that it does not require jQuery.
Image by <a href="https://pixabay.com/users/geralt-9301/?utm_source=link-attribution" rel="nofollow ugc">Gerd Altmann</a> from Pixabay.
<h3>How To Use</h3>
Simply install and activate this plugin and it will work – there are no options to fuss over.

AJAX Comments Refueled

An all-AJAX drop-in for the stock comments system.

Ariagle

Not everyone wants to leave a comment, and you don’t know who have read your post without feedback. WP-Clap helps you make your visitors leave simple feedback without type a comment.
WP-Clap will creat a clap area after your post. Just like the comment area, your readers can clap for your post after reading, but they do not need to type anything. You can also use our function in your homepage to show how many claps the posts have, just like how many comments there are.
并不是每个人都会留言，日志冷场现象经常出现。WP-Clap插件允许你的读者在浏览日志后能轻松简单地留下路过的印记，减少冷场现象。
Features:
<ul>
<li>AJAX Clapping</li>
<li>Avatar suppor</li>
<li>Clapper details(name, email, url, date)</li>
<li>Image clap link</li>
<li>Custom clap text</li>
<li>Custom HTML notice</li>
<li>Auto insert into post and excerpt</li>
</ul>
equires Version:
I don’t know whether WP-Clap can work at WP 2.5 or lower, but you can have a try.
Supported Languages:
<ul>
<li>US English/en_US (default)</li>
<li>简体中文/zh_CN (translate by <a href="http://blog.lolily.com/" rel="nofollow ugc">Ariagle</a>)</li>
<li>日本語/ja_JP (translate by <a href="http://xiaolife.com/" rel="nofollow ugc">晓晓</a>)</li>
<li>Dutch/nl_NL (translate by <a href="http://blog.bokhorst.biz/" rel="nofollow ugc">Marcel</a>)</li>
</ul>

WP-Clap

Not everyone wants to leave a comment, and you don't know who have read your post without feedback. WP-Clap helps you make your visitors leave si …

AJAX Comments Refueled vs WP-Clap