Alternatives

Products that do what Open-source UI components for apps that run inside ChatGPT does

800M people use ChatGPT and Claude weekly. Right now they get text responses. Soon they'll get real interfaces: product cards, blog posts, booking flows, payment screens rendered directly in the conversation. We built an open-source component library for this. Install any block with one command and customize it to your brand. If you're building MCP servers or experimenting with AI-native apps, this might save you time. Are you building apps for AI assistants? Would love to hear what's missing in your workflow.

1. 1
   Chatpad AI▲142

   Not just another ChatGPT user-interface

   2023

2. 2
   Chat Interface for OpenAI Assistants▲119

   ChatGPT-like customer interactions in a website widget

   2024

3. 3
   Chatgot▲214

   Chat freely, got every AI assistants here for you

   2023

4. 4
   Ogment MCP-Builder▲149

   Make your product accessible in ChatGPT & Claude, in minutes

   Nov 2025

5. 5
   WriteMage▲127

   The only AI app you need, use ChatGPT natively in any app

   2023

6. 6
   The Ultimate ChatGPT Tools Directory▲96

   Find the best curated ChatGPT, chatbots, GPT4 apps & plugins

   2023

7. 7
   Ads in ChatGPT▲168

   Create, manage, and measure your ChatGPT ad campaigns

   May 2026

8. 8
   ChatGPT API▲245

   An API from OpenAI for ChatGPT

   2023

9. 9
   ChatbotGPT▲123

   Custom ChatGPT agents with your own data

   2023

10. 10
    ChatGPT for Slack▲116

    A new app for Slack that uses ChatGPT

    2023

11. 11
    ToolBox MacOS▲108

    Let ChatGPT interact with your Mac

    2023

12. 12
    Cheat Layer▲212

    Automate your business from end to end in natural language

    2023

13. 13
    AnswerFlow AI▲155

    Build unlimited custom ChatGPT bots, with a lifetime license

    2023

14. 14
    IdeaGPT▲100

    100+ new AI startups people built using GPT-4 free

    2023

15. 15
    OpenChatCut▲109

    Open-source AI agent video editor with a real timeline

    Jul 2026 · openchatcut.com

16. 16
    PromptForge▲128

    One click AI prompts inside ChatGPT, Bard & Claude

    2023

17. 17
    Click▲133

    Live research context for ChatGPT and Claude

    25d ago · useclick.ai

18. 18
    BackEngine MCP▲137

    Make private company knowledge usable for AI

    Aug 2026 · backengine.com

19. 19
    Cuely▲140

    Pay-as-you-go chatGPT Plus with 5M free token credits

    2023

20. 20
    Chatterbox for ChatGPT▲127

    Native macOS ChatGPT app with powerful screenshot tools

    2022

21. 21
    OpenAI for Desktop▲104

    Desktop client app for OpenAI, ChatGPT, GPT4

    2023

22. 22
    Axis One▲78

    ChatGPT in a box. Private and Local AI.

    Nov 2025

23. 23OS
    Open-Source ChatGPT Code Interpreter▲8

    Hi friends! I've been waiting for ChatGPT Code Interpreter access for so long that I decided to just build my own. I figured maybe some of you are in the same boat so decided to do it as an Open Source project.

    2023 · ricklamers.io

24. 24CO
    Chatcraft.org: Developer-Focused Open Source ChatGPT▲5

    We have been using GPT to write code since playground days. This UI avoids logins, gpt-4 throttling and is also cheaper to use than ChatGPT Premium. We also have various features to minimize costs and speed up iteration. Furthermore html & mermaid previews are a taste of the kind of features help-yourself opensource model enables vs official UI. For backstory see our blog posts: https://blog.humphd.org/chatcraft-org/ https://taras.glek.net/post/chatcraft.org-opensourcechatgpt-...

    2023 · chatcraft.org

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