Jeff Starr

Override WordPress “automatically close comments” option and leave comments open on any individual posts.
Want to keep comments open on a few old posts? This plugin is for you. Here’s how it works:
In the WordPress Discussion Settings, there is an option called “Automatically close comments on posts older than” whatever specified number of days. When this setting is enabled, comments will be disabled on any posts that are past the deadline, whatever “x” number of days.
What WordPress is missing is a simple way to override that global option on a per-post basis. That’s exactly what this plugin does. For any post that is past the comment deadline, this plugin will display a small meta box on the “Edit Post” screen for each post. There you can check the box to enable comments on the post. Comments will then remain open for that post indefinitely, until the box is unchecked or the plugin is uninstalled.
Note: The override meta box will not be displayed if the post is not past the comment deadline (whatever “x” number of days).
Check out the screenshot below to get a better idea.
Features
<ul>
<li>Clean, secure code</li>
<li>Written according to the WP API</li>
<li>Simple, lightweight, and flexible</li>
<li>Localized and translation ready</li>
<li>Cleans up after itself when uninstalled</li>
</ul>
For more details about how it works, visit the <a href="https://wordpress.org/plugins/override-comment-options/#installation" rel="ugc">Installation docs</a>.
Privacy
This plugin does not collect or store any user data. It does not set any cookies, and it does not connect to any third-party locations. Thus, this plugin does not affect user privacy in any way.
Override Comment Options is developed and maintained by <a href="https://x.com/perishable" rel="nofollow ugc">Jeff Starr</a>, 15-year <a href="https://plugin-planet.com/" rel="nofollow ugc">WordPress developer</a> and <a href="https://books.perishablepress.com/" rel="nofollow ugc">book author</a>.

Override Comment Options

Enables per-post override of "Automatically close comments on posts older than" option in the WP Discussion Settings.

codebycarter

WPBB is an easy to use forum for your WordPress site which features Facebook authentication, support for displaying your twitter account on your forum that your members can follow and so much more.
You can safely deactivate the plugin at any time and not lose a thing. The plugin will notify you if it is deactivated which you can disable by removing the page WPBB creates for you. If you decide to delete the plugin at any time, all traces of WPBB are deleted permanently.
<h4>Features</h4>
<ul>
<li>Compatibility – Fully compatible with 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0</li>
<li>Ease of Integration – WPBB works with any theme, you can change your theme anytime and WPBB will automatically update itself.</li>
<li>Translatable – WPBB can easily be translated into your preferred language!</li>
<li>Facebook registration – Allow your users to register on your WordPress site via Facebook. This automatically creates a WP account for your Facebook users which they can then login to after authenticating.</li>
<li>Twitter – Enter your twitter account in your settings and your users will be able to follow your website / personal account with the click of a button.</li>
<li>Private Messaging System – Allow users to send messages to each other.</li>
<li>Member Profiles – All your WP users are automatically apart of your forum whenever you create it and have a “forum profile” which can be viewed on the forum which shows the users avatar, username, role, posts, website and signature. Signatures are apart of WPBB and allow your users to enter a signature which can be text or images and is displayed below their profile and posts.</li>
<li>Categories, Forums, Sub forums – Organise your forums into categories and your sub forums into forums. There is no limit to the amount of forums its parent can have, and each are ordered by its appearance in its parent.</li>
<li>Permissions system – Currently supports the ability to allow or disallow any role (even custom roles!) any specific permission (edit, view, read, post, reply, lock, delete, sticky). WPBB grabs all known roles from your WP site which you can set permissions for manually or copy existing permissions from a previous forum.</li>
<li>Role Permissions – New in 1.1. Allows you to choose whether a role can only edit, lock, delete and sticky their own topics or everyones.</li>
<li>Topics – If you have the permissions to do so you can edit, lock, delete, sticky, view, read, post or reply with a topic.</li>
<li>Posts – You can edit and delete any post and the posts topic affects the posts status. You can create posts in two ways, creating a topic reply with presents the WP editor for improved formatting or you can use the quick reply feature (if it is enabled in your settings).</li>
<li>Pagination System – Supports a simple pagination system which organises your topics and posts – you can set the max topics/posts per page in your wpbb settings.</li>
<li>Unread Topics – WPBB collects a list of topics which have been posted when you were offline and displays them for you. You can mark any of them as read once you’ve read them.</li>
<li>Unanswered Topics – Similar to the above feature, unanswered topics are ones which haven’t yet received any replies.</li>
<li>Admin area – The WPBB settings integrate with your existing WP admin area where you can easily manage your forums with ease. The WPBB overview allows you to change the order of a category, forum or sub forum, edit it and delete it with a single click. You can also create new categories, forums, sub forums and topics via the admin area.</li>
<li>Settings – WPBB is jam packed with settings that you can use to customise the forum any way you want to.</li>
<li>Tools – Tools help make your life easier. Tools such as updating your roles whenever you add, change or remove them and a tool to recreate the forum page if you ever accidentally delete it.</li>
</ul>
And much much more!

WP Bulletin Board

WP Bulletin Board (WPBB) is an easy to use forum for your Wordpress site with Facebook and Twitter features.

Override Comment Options vs WP Bulletin Board