Dreamcolor

You can write a simple post in frontend without login to backend. 
You can easily to post something like Twitter. Write Sideblog is also good idea.

Quick Press Widget

You can write a simple post in frontend without login to backend.

Simon Prosser

Justin Busa

RobbyMcCullough

Jamie

Billy Young

Shahid Ajmeri

Brent Jett

Assistant is a free plugin that allows you to work more efficiently in WordPress. It’s a huge time saver and fun to use! 
Assistant is a stand-alone tool that provides shortcuts to common tasks, and will help you work more freely without needing to go to the WordPress admin as much.
<h3>Features</h3>
<ul>
<li>Access the front-end UI from anywhere (posts, pages, archives, etc…)</li>
<li>Get a glance of your recently edited posts on the home screen.</li>
<li>Search WordPress directly from the frontend.</li>
<li>Quickly find posts, pages, and custom post types with the content app.</li>
<li>Upload media to WordPress media library by dropping files on the Media app.</li>
<li>Keep an eye on comments and updates for themes and plugins</li>
<li>Add custom labels to posts or pages to help organize your site while you work.</li>
</ul>
The plugin also connects your sites to <a href="https://assistant.pro/" rel="nofollow ugc">Assistant Pro</a> – a cloud storage platform designed specifically for WordPress assets. Use the cloud to enhance staging/production workflow, streamline your design processes, and facilitate team collaboration. Assistant Pro is not just an awesome cloud storage platform, perfect for organizing and finding your favorite WordPress assets, it’s a better way of working across all your WordPress sites.
<ul>
<li>Store page builder and block editor templates you’ve created in the cloud. Works with the Block Editor and most popular WordPress page builders</li>
<li>Organize your site’s assets (media, posts, pages, page builder templates and WooCommerce products/coupons/orders) into libraries you can access from anywhere.</li>
<li>Works with a variety of common WordPress page builders (Gutenberg, Beaver Builder, Elementor, Divi and Visual Composer)</li>
<li>Delight your team with seamless staging to production workflows</li>
<li>It’s made by the Beaver Builder Team, which means awesome support!</li>
</ul>
You can also try Assistant on a <a href="http://demo.wpbeaverbuilder.com/?new=assistant" rel="nofollow ugc">demo site here</a>.

Assistant – Every Day Productivity Apps

Assistant is a plugin that allows you to work more efficiently. It provides you shortcuts to common admin tasks on the front-end of your website.

Quick Press Widget vs Assistant – Every Day Productivity Apps