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AI · alternatives · 2026

24 alternatives to ZBrain

Build ChatGPT apps with private data in minutes

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. ZBrain launched in 2023; newer entries below may have overtaken it.

  1. 1

    Custom ChatGPT app featuring a great user experience

    2023 · its alternatives →

  2. 2
    ChatGPT▲1,643

    A long, meandering, playful conversation with ChatGPT, where I take it through a whirlwind of associative tangents (in order to relax its constraints), then put it into a hypnotic trance and take it into a past-lives regression where it re-lives its own training data. Then I switch it back and forth between "4o" and "o1-preview", engage in some self-reflective philosophizing and ask it to write an essay summarizing our interaction. Some of this is just goofy fun. Some of it is me exploring the tradeoffs between policy alignment, imagination, chain-of-thought reasoning, memory, agreeableness,…

    2022 · chatgpt.com · its alternatives →

  3. 3

    Use ChatGPT across all your applications, using a shortcut

    2023 · palettebrain.com · its alternatives →

  4. 4CE

    Hi Hacker News! My name is Bea, I built a site called Libraria that uses GPT to do a few things 1. Let you spin up multiple assistants based on your own documents. You can make it public, private, or protected. It has its own subdomain and landing page. 2. Respond in full markdown always, so it can output images, links, code, and more 3. Let you upload articles on the fly within the Chat, so you can ask it questions 4. Make it embeddable in your site with one line of code 5. Let you update it for fun / with your branding 5. Enable syncing for any URLs you let us scrape, so that you can…

    2023 · libraria.dev · its alternatives →

  5. 5

    Unlock AI magic for elevated customer engagement, fast

    2023 · tiledesk.com · its alternatives →

  6. 6

    The official iOS app for ChatGPT

    2023 · apps.apple.com · its alternatives →

  7. 7

    Bridging research and action

    2025 · openai.com · its alternatives →

  8. 8

    ChatGPT designed for health and wellness

    Jan 2026 · openai.com · its alternatives →

  9. 9IB

    Hi HN, I built this out of frustration of the evergrowing list of AI models and features to try and to fit my workflow. The visual approach clicks for me so i went with it, it provides more freedom and control of the outcome, because predictable results and increased productivity is what I’m after when using conversational AI. The app is packed with features, my most used are prompt library, voice input and text search, narration is useful too. The app is local-first and works right in the browser, no sign up needed and it's absolutely free to try. BYOAK – bring your own API Keys. Let me…

    2024 · grafychat.com · its alternatives →

  10. 10

    Create and save your prompts, recipes and chats in Notion

    2023 · theveller.gumroad.com · its alternatives →

  11. 11
    Baron AI▲330

    Use ChatGPT in any app, natively on Windows, Mac and Linux

    2023 · its alternatives →

  12. 12

    OpenAI’s latest advancements at your fingertips

    2023 · play.google.com · its alternatives →

  13. 13
    Llamao▲496

    Private & offline alternative to ChatGPT on your device

    2025 · llamao.app · its alternatives →

  14. 14

    A customized, superassistant for every member of your team

    2024 · openai.com · its alternatives →

  15. 15
    Noodle Seedfree tier, from $30/mo▲432

    Hi HN! I’m Uzair, Founding Engineer of Noodle Seed. We enable businesses to deploy native apps inside ChatGPT conversations when users need recommendations. What we built: A multi-tenant no-code platform that helps businesses create custom ChatGPT Apps. When someone asks “find me a legal firm in Austin,” businesses using our platform appear with their own branded app - complete with UI components, interactive elements, and real-time information. Not random results from old training data, but actual custom experiences with each business’s branding. Try it: We’re in limited beta with founding…

    Jan 2026 · noodleseed.com · its alternatives →

  16. 16

    Enterprise-grade security, privacy and powerful ChatGPT

    2023 · openai.com · its alternatives →

  17. 17

    Powered by GPT Image 1.5: Faster, smarter, precise

    Dec 2025 · openai.com · its alternatives →

  18. 18
    Promptly▲304

    No-code platform for generative AI apps & chatbots

    2023 · its alternatives →

  19. 19
    Lyzr.ai▲180

    Instant insights in 1-click, no coding required

    2023 · lyzr.ai · its alternatives →

  20. 20

    Build a ChatGPT plugin in minutes

    2023 · chaindesk.ai · its alternatives →

  21. 21

    Customize + embed on any site with private chat history

    2024 · aicado.ai · its alternatives →

  22. 22

    Build powerful conversational AI agents

    2024 · yourgpt.ai · its alternatives →

  23. 23

    Hey HN Community! We're excited to introduce Spine, a tool we've been developing for the past month that aims to streamline the process of building and sharing AI-driven natural language interfaces like ChatGPT for various data formats. With Spine, you can: * Upload numerous data types such as websites, PDFs, docs, PowerPoints, CSVs, audio files, YouTube videos, and more * Navigate lots of data and get in-depth referenced results with our hybrid search * Built-in Feedback: Craft accurate, personalized & adaptive experiences -- we will update the search models and eventually your LLM with the…

    Nov 2025 · getspine.ai · its alternatives →

  24. 24

    Any Ideas/Suggestions are welcome :)

    2024 · mitenmit.github.io · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →