Alternatives

Products that do what plenz does

ai prompt refiner

1. 1
   WritingMate.ai▲477

   Free ChatGPT alternative that works as a Chrome extension

   2023

2. 2
   Promptimize AI▲335

   Your personal prompt engineer across all AI platforms

   2025

3. 3
   Pretty Prompt▲495

   Grammarly for prompting

   2025

4. 4
   PlugThis▲448

   Create your own Chrome Extensions by chatting with AI

   Jul 2026 · plugthis.ai

5. 5
   Pretty Prompt 1.0 Extension and Web App▲304

   Grammarly for prompting. Turn any text into perfect prompts.

   Jan 2026 · pretty-prompt.com

6. 6
   AI Toolbox 3.0▲391

   Search, organize and export every AI chat in one place

   Jul 2026 · ai-toolbox.co

7. 7
   AI Writer Chrome Extension▲383

   Use an advanced AI to help you write content

   2021

8. 8
   Prompter▲128

   Generate instant AI prompts based on your projects

   2025

9. 9
   Prompt Whisperer▲352

   Simplifying your path to AI interaction

   2024

10. 10
    Quicky AI▲280

    Using AI is made easy, productive and instant on any website

    2023

11. 11
    ChatSonic Chrome Extension▲162

    Supercharge your Email, Twitter, and Web with ChatGPT

    2023

12. 12
    Google Chrome Skills▲273

    Turn your best AI prompts into one-click tools in Chrome

    Apr 2026 · blog.google

13. 13
    Open Source AI Chrome Extension▲87

    Chrome extension allow the user to communicate with the AI

    Sep 2025

14. 14
    Promptacore▲103

    Your system for creating, managing and using AI prompts

    Oct 2025

15. 15
    HelpMeAsk - browser extension▲10

    Ask Smarter, Better Answers - Refine Questions in One Click

    2025

16. 16
    EzReply - AI That Sounds Like You▲34

    1-Click Perfect Replies/DMs in Seconds

    2025

17. 17LB
    Local Browser AI▲15

    Using the new Prompt API to build a free open source privacy-first chat extension that runs on Chrome or Edge on Linux, Mac, Windows and ChromeOS

    Oct 2025 · blog.alexewerlof.com

18. 18
    Promptench▲5

    Optimize prompts, analyze videos & transform audio with AI

    Feb 2026 · promptench.com

19. 19
    FixProm▲15

    Speak your mind, we'll refine it.

    2025

20. 20
    PromptVault▲4

    Save & reuse AI prompts in 1 click — ChatGPT, Claude & more

    May 2026 · mypromptsvault.com

21. 21
    Verdit AI Responder▲13

    Opensource & Free Sales AI Tool. Save time answering clients

    2025

22. 22
    PromptNest▲2

    A clean, fast, local-only prompt library for creators.

    Nov 2025 · chromewebstore.google.com

23. 23
    ReplyGen▲11

    Personalized AI reply co-pilot for LinkedIn, X & Threads

    Jun 2026 · replygen.app

24. 24
    Proenpt▲5

    Garbage In. Genius Out

    Jul 2026 · proenpt.vercel.app

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