Seth Alling

Up until recently, WordPress gave two options: You could either disable comments and trackbacks by default for all pages and posts, or you could have them active by default. In WordPress version 4.3, this finally changed so comments are always disabled on new pages.
While the new change makes it easier for many of the sites, it make it harder for people who need to get the reverse and enable comments on all pages, or if they need to change the default for a custom post type. This plugin allows you to choose whether comments are enabled or disabled by default on all new posts, pages and custom post types, while still giving the ability to individually enable comments on posts or pages.
Also, this plugin provides a way to quickly disable all comments or pingbacks for a specific custom post type. It directly interacts with your database to modify the status, so it is highly recommended that you backup your database first. There shouldn’t be any issues using this feature, but it’s always good to play it safe.
<a href="https://github.com/sethta/no-page-comment" title="No Page Comment Development on Github" rel="nofollow ugc">View No Page Comment Development on Github</a>
<a href="https://github.com/sethta/no-page-comment/issues" title="Report an Issue about No Page Comment on Github" rel="nofollow ugc">Please Report any Issues about No Page Comment on Github</a>
<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5WWP2EDSCAJR4" title="Donate to support the No Page Comment Plugin development" rel="nofollow ugc">Donate to Support No Page Comment Development</a>

No Page Comment

An admin interface to control the default comment and trackback settings on new posts, pages and custom post types.

DanielAGW

Dev49.net

WP First Letter Avatar sets custom avatars for users without Gravatar. The avatar will be a first letter of the user’s name. You can also configure the plugin to use any other letter to set custom avatar.
WP First Letter Avatar includes a set of beautiful, colorful letter avatars in many sizes. Optimal size will be chosen by the plugin in order to display high quality avatar and not download, for example, big 512px avatars when only 48px is needed… PSD template for avatar is also included.
You can also create your own avatar set by creating new directory next to ‘default’ folder and following the naming convention from ‘default’.
By default, custom avatar will be set only to users without Gravatars, but you can change that in settings and not use Gravatar at all.
WP First Letter Avatar helps you bring more colors into your blog. Plus, your readers will be more willing to comment on your posts, since they can actually relate to these avatars much better than to Mystery Person.
All images were compressed using the fantastic <a href="https://tinypng.com/" rel="nofollow ugc">TinyPNG</a>, so avatars are incredibly light and ultra-high quality.
WP First Letter Avatar is also available <a href="https://github.com/Dev49net/wp-first-letter-avatar" rel="nofollow ugc">on GitHub</a>.
<h4>Compatibility with other plugins</h4>
WP First Letter Avatar is fully compatible with <a href="https://bbpress.org/" rel="nofollow ugc">bbPress</a> and <a href="http://www.gvectors.com/wpdiscuz/" rel="nofollow ugc">wpDiscuz</a>. For <a href="https://buddypress.org/" rel="nofollow ugc">BuddyPress</a> compatibility please use my other plugin – <a href="https://wordpress.org/plugins/buddypress-first-letter-avatar/" rel="ugc">BuddyPress First Letter Avatar</a>.
<h4>Requirements</h4>
WP First Letter Avatar requires at least PHP 5.4. It does not work properly on PHP 5.3.x and earlier.

WP First Letter Avatar

cool plugin

Set custom avatars for users with no Gravatar. The avatar will be the first (or any other) letter of user's name on a colorful background.

No Page Comment vs WP First Letter Avatar