tempranova

This is a simple plugin that uses AJAX to load comments, converting the “Newer/Older Comments” button into a button that loads more comments instantly.
This plugin also paginates nested replies. You can customize styling in whatever way you choose.
Using Settings > Comment Load More, user can set desired pagination (currently both comments and replies have the same number).

Comment Load More

This plugin allows you to load more comments instantly via a button push (AJAX), instead of pagination that reloads the page.

mg12

Show the recent comments in your WordPress sidebar. You can limit the number of comments, set the maximum length of excerpts, filter out pingbacks/trackbacks. You can also enable or disable the avatars, resize and reposition them. Besides above, it supports WordPress Widget. And now, it’s AJAX paged comments, you can turn to the newer or older comments when you clicked on the paging buttons.
在 WordPress 的侧边栏显示最新评论。你可以限制显示评论的数量，设置评论摘要的最大长度，过滤反链接评论。你还可以显示或屏蔽评论者头像，调整头像的尺寸和位置。除此之外，此插件还支持 WordPress Widget 功能。而现在，它支持基于 AJAX 的评论分页，你可以通过点击分页按钮来查看新旧评论。
Features:
<ul>
<li>Support for East Asian characters</li>
<li>Avatar support</li>
<li>Widget support</li>
<li>AJAX paged comment</li>
<li>Expend comment contents</li>
<li>Separating pingbacks/trackbacks from comments</li>
<li>Support ‘Show smilies as graphic icons’ option</li>
<li>Filter quotes</li>
<li>Support jQuery lib</li>
<li>SEO friendly</li>
</ul>
Supported Languages:
<ul>
<li>US English/en_US (default)</li>
<li>简体中文/zh_CN (<a href="http://www.neoease.com/" rel="nofollow ugc">mg12</a>)</li>
<li>繁體中文/zh_TW (<a href="http://pseric.com/" rel="nofollow ugc">Pseric</a>)</li>
<li>Albanian/sq_AL (<a href="http://www.romeolab.com/" rel="nofollow ugc">Romeo Shuka</a>)</li>
<li>Arabic/ar (Mustafa)</li>
<li>Belorussian/by_BY (Marcis Gasuns)</li>
<li>Bulgarian/bg_BG (<a href="http://www.inspirelearning.net/" rel="nofollow ugc">Emil Minev</a>)</li>
<li>Czech/cs_CZ (Ladislav Prskavec)</li>
<li>Danish/da_DK (<a href="http://www.lystorp.com/" rel="nofollow ugc">Morten L. Johansen</a>)</li>
<li>Dutch/nl_NL (<a href="http://directic.nl/" rel="nofollow ugc">Jan Willem Wilmsen</a>)</li>
<li>Finnish/fi (Christian Hellberg)</li>
<li>Français/fr_FR (Luc Santeramo)</li>
<li>German/de_DE (<a href="http://sprungmarker.de/" rel="nofollow ugc">Sylvia Egger</a>)</li>
<li>Hungarian/hu_HU (János Csárdi-Braunstein)</li>
<li>Israel Hebrew/he_IL (<a href="http://www.lawtech.co.il/" rel="nofollow ugc">Roy Azrad</a>)</li>
<li>Italian/it_IT (Enrico Flaminios)</li>
<li>Lithuania/lt_LT (<a href="http://mantas.malcius.lt/" rel="nofollow ugc">Mantas Malcius</a>)</li>
<li>Macedonian/mk_MK (<a href="http://www.solipamet.com/" rel="nofollow ugc">Dimitar Talevski</a>)</li>
<li>Persian/fa_IR (<a href="http://blog.sagharchi.ir/" rel="nofollow ugc">Farzad Sagharchi</a>)</li>
<li>Polish/pl_PL (<a href="http://www.kierunek-sukces.pl/" rel="nofollow ugc">Chris Ostrowski</a>)</li>
<li>Russian/ru_RU (<a href="http://www.alexnote.ru/" rel="nofollow ugc">Алексей В.Ч.</a>)</li>
<li>Spanish/es_ES (Eugenio Cavero)</li>
<li>Swedish/sv_SE (Jonas Nordström & Patrik Hultgren)</li>
<li>Türkçe/tr_TR (<a href="http://www.tirnakmakasi.com/" rel="nofollow ugc">Hamdi Kellecioglu</a>)</li>
<li>Ukrainian/uk (<a href="http://pavonine.com.ua/cat/themes/" rel="nofollow ugc">Jurko Chervony</a>)</li>
</ul>
Demo:
<a href="http://www.neoease.com/" rel="nofollow ugc">http://www.neoease.com/</a>

WP-RecentComments

Display recent comments in your blog sidebar.

Comment Load More vs WP-RecentComments