Planet 9

Planet ⑨ is an AI assistant plugin for WordPress that enhances your content creation and translation workflow with a smart, lightweight toolbar.
When you focus on a compatible text field, the floating toolbar activates in the bottom-right of your screen, giving you instant access to advanced AI features powered by OpenAI. The plugin integrates seamlessly with most themes and plugins.
Available AI assistants:
<ul>
<li>Teller – AI-powered copywriting assistant</li>
<li>Linus – AI translation assistant</li>
</ul>
More assistants are in development (e.g. image generation, code writing).
To use the plugin, you need an OpenAI API key. No data is stored or tracked — the plugin only sends content securely to OpenAI’s API for processing.
Current features (v2.15):
<ul>
<li>Smart floating toolbar (active only in editable text fields)</li>
<li>AI content generation based on your input or surrounding content</li>
<li>Spelling and grammar improvement</li>
<li>Automatic content structuring (headings, spacing, bullet points)</li>
<li>Translation into multiple languages via dropdown selector</li>
<li>Supports the GPT-4o model (fast, affordable, and highly capable)</li>
<li>Toolbar is now draggable</li>
<li>Fully privacy-friendly: no tracking, no local storage</li>
</ul>
Roadmap highlights:
<ul>
<li>Additional AI assistants (image generation, SEO, code, etc.)</li>
<li>Integration with Gutenberg, Elementor, and other page builders</li>
<li>Toolbar customization options</li>
<li>Improved compatibility with third-party fields</li>
</ul>
<h3>External Services</h3>
This plugin uses the OpenAI API to generate content, improve grammar, structure text, and translate selected content.
Content is only sent to OpenAI when a user actively uses an AI assistant. No data is stored or tracked by the plugin.
For usage terms and privacy policies, refer to: 
– https://openai.com/policies/terms-of-use 
– https://openai.com/policies/privacy-policy
<h3>A brief Markdown Example</h3>
Available AI assistants:
<ul>
<li>Teller – Content generation and rewriting</li>
<li>Linus – Multilingual translation</li>
</ul>
Key Features:
<ol>
<li>Context-aware floating toolbar</li>
<li>AI generation, correction, and translation</li>
<li>Works with your own OpenAI API key</li>
<li>No tracking or local data storage</li>
</ol>
<blockquote>
Create, translate, and improve content with AI—without leaving WordPress.
</blockquote>
Visit <a href="https://planet9.be" rel="nofollow ugc">planet9.be</a> for documentation, updates, and support.

Planet ⑨ (Beta)

AI-powered writing and translation directly inside WordPress, via a smart, context-aware floating toolbar.

Sparanoid

A must-have plugin if you’re running a Chinese blog. This plugin also works fine with multisite enabled WordPress (aka. WordPress Mu).
No options, no additional database inserts, no stupid banners and shitty ads, install and go.
你客戶／合作夥伴不光文案寫的爛，而且還不會排版？Space Lover 可以幫到你。它會神奇的在中文、日文和英文、數字、符號之間自動加入空白，讓客戶網站的文案、文章看上去規範整潔。
無選項、無 MySQL 插入，無廣告，安裝即用。
覺得這招治標不治本？也可以試試 <a href="https://github.com/sparanoid/chinese-copywriting-guidelines" rel="nofollow ugc">sparanoid/chinese-copywriting-guidelines</a>，讓你的客戶／合作夥伴學會如何正確的排版。
Before:
<pre><code>今天出去買菜花了5000元
</code></pre>
After:
<pre><code>今天出去買菜花了 5000 元
</code></pre>

Space Lover

Magically add an extra space between Chinese characters and English letters / numbers / common punctuation marks

Planet ⑨ (Beta) vs Space Lover