Best AI tools for writing & content (2026)

The top 10 of 10 matching tools in the ShipRadar directory, for anyone writing emails, posts, blogs or marketing copy. Updated Oct 14, 2026.

How this list is made: tools are pulled from ShipRadar's directory and ranked by traction on their source (GitHub stars, Hugging Face likes, Hacker News points, Product Hunt votes) plus freshness. Well-known tools are included as editor's picks. Read the methodology.

1. 1

   yomiyasu

   Rewrites stiff AI-written Japanese into natural Japanese.

   ✍️ Writing · 1,943 GitHub stars · Visit ↗

2. 2

   Easel

   A free AI that spots social media trends, writes posts and publishes them, mainly for Chinese platforms like Xiaohongshu and Douyin.

   📣 Marketing & Sales · 3,572 GitHub stars · Visit ↗

3. 3

   sepia

   Makes AI-written text sound less like AI, for fiction and professional writing. An add-on for AI coding tools.

   ✍️ Writing · 3,155 GitHub stars · Visit ↗

4. 4

   Grammarly

   Checks your writing for mistakes and helps it sound clearer, in email, documents, and websites.

   ✍️ Writing · Editor's pick · Visit ↗

5. 5

   Jasper

   An AI writer for marketing teams that keeps blog posts and ads in your brand's voice.

   ✍️ Writing · Editor's pick · Visit ↗

6. 6

   QuillBot

   Rewrites sentences in different words, summarizes text, and helps with citations. Popular with students.

   ✍️ Writing · Editor's pick · Visit ↗

7. 7

   Copy.ai

   AI for sales and marketing teams: researches leads and writes outreach emails.

   📣 Marketing & Sales · Editor's pick · Visit ↗

8. 8

   HubSpot Breeze

   The AI built into HubSpot's customer software. Helps write emails, research companies, and answer customers.

   📣 Marketing & Sales · Editor's pick · Visit ↗

9. 9

   humanizer

   Paste in an AI-written draft and get it back sounding more like a person, with the facts kept.

   ✍️ Writing · 22 traction · Visit ↗

10. 10

    Bearconnect 2.0

    AI help for writing LinkedIn posts and reaching out to people.

    📣 Marketing & Sales · 0 Product Hunt upvotes · Visit ↗

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