Md Rashed Hossain

Are you want to add Guest Post system with frontend form, this plugin will help you to do this very easily. You just need to use two shortcodes.
<h3>Features</h3>
<ul>
<li>Frontend form</li>
<li>You can show posts on frontend just using shortcode</li>
<li>Only loggedin users can access the form</li>
<li>By default all the posts status will be “Pending”</li>
<li>Very clean code, so you can modify the plugin very easily</li>
</ul>
<h3>Usages</h3>
<ul>
<li>Use this shortcode [mlgp-form] to show post submission form.</li>
<li>Use this shortcode [mlgp-post] to show post on frontend.</li>
</ul>

Safan Guest Post

This plugin will help you to add Guest Post feature in your wordpress site.

ktanakak

This plugin provides a secure and isolated way to allow posting to your WordPress site from the frontend. It creates a special page with a posting form that is protected by a custom username and password that you set in the admin area. This does not use the standard WordPress user system, making it ideal for guest posts or simple submission forms where you don’t want to create a full user account for the author.
Core Features: 
* No WordPress Account Needed: Visitors can post content using a single, shared username and password you define. 
* Admin Settings Page: Easily configure the login credentials and the URL slug for the posting page. 
* Control Post Status: Choose whether submissions are immediately published or saved as “Draft” for review. 
* Featured Image Support: Allows authors to upload a single featured image with their post. 
* Secure: Uses WordPress nonces and best practices to ensure submission forms are secure.
This plugin is fully functional on its own. We also offer a Pro version for those who need more features.
<h3>How to Use</h3>
<ol>
<li>After activating, go to the “Frontend Poster Settings” menu in your WordPress admin dashboard.</li>
<li>On the settings page, configure the following and save:
<ul>
<li>Username: The username for logging into the posting page.</li>
<li>Password: The password for logging in.</li>
<li>Page Slug: The URL for your posting page (e.g., <code>write-post</code>).</li>
</ul>
</li>
<li>A page will be automatically created at <code>https://(Your Website)/(your-slug)/</code>.</li>
<li>Visit this URL and log in with the credentials you set to see the posting form.</li>
</ol>

Easy Mobile Poster

モバイルに最適化されたシンプルなフロントエンド投稿フォーム。WordPressユーザーとは独立した独自ログインシステムを提供します。 A simple and secure plugin to allow guest posting on frontend without requiring Wor …

Safan Guest Post vs Easy Mobile Poster