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AI · alternatives · 2026

24 alternatives to Open source alternative to ChatGPT and ChatPDF-like AI tools

Hey everyone, We have been building SecureAI Tools -- an open-source application layer for ChatGPT and ChatPDF-like AI tools. It works with locally running LLMs as well as with OpenAI-compatible APIs. For local LLMs, it supports Ollama which supports all the gguf/ggml models. Currently, it has two features: Chat-with-LLM, and Chat-with-PDFs. It is optimized for self-hosting use cases and comes with basic user management features. Here are some quick demos: * Chat with documents using OpenAI's GPT3.5 model: https://www.youtube.com/watch?v=Br2D3G9O47s * Chat with documents…

SecureAI Tools is an open-source application layer that enables chat interactions with AI language models and PDF documents. It works with both local LLMs through Ollama and OpenAI-compatible APIs, supporting gguf/ggml… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open source alternative to ChatGPT and ChatPDF-like AI tools launched in 2023; newer entries below may have overtaken it.

  1. 1

    Self-hosted alternative to ChatGPT, ChatPDF-like AI tools

    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

    Chat with AI using your API keys. Pay only for what you use. ChatGPT, Gemini, Claude, and other LLMs supported. The best chat LLM frontend UI for all AI models.

    2023 · typingmind.com · its alternatives →

  4. 4

    The official iOS app for ChatGPT

    2023 · apps.apple.com · its alternatives →

  5. 5

    Hi Hackers, Excited to share a macOS app I've been working on: https://recurse.chat/ for chatting with local AI. While it's amazing that you can run AI models locally quite easily these days (through llama.cpp / llamafile / ollama / llm CLI etc.), I missed feature complete chat interfaces. Tools like LMStudio are super powerful, but there's a learning curve to it. I'd like to hit a middleground of simplicity and customizability for advanced users. Here's what separates RecurseChat out from similar apps: - UX designed for you to use local AI as a daily driver.…

    2024 · recurse.chat · its alternatives →

  6. 6

    AI Toolbox (formerly ChatGPT Toolbox): folders, search, bulk export, and prompt chaining for ChatGPT, Claude, Gemini, and Grok. 40,000+ users. Start free.

    Jul 2026 · ai-toolbox.co · its alternatives →

  7. 7

    The first open source alternative to ChatGPT

    2023 · huggingface.co · its alternatives →

  8. 8

    The easiest way to chat with local AI

    2025 · ollama.com · its alternatives →

  9. 9

    Open AI announced ChatGPT Plugins to access real-world data

    2023 · openai.com · its alternatives →

  10. 10

    The fast, easy and cheap OpenAI alternative

    2023 · lemonfox.ai · its alternatives →

  11. 11

    Custom ChatGPT agents with your own data

    2023 · chaindesk.ai · its alternatives →

  12. 12

    Access OpenAI's ChatGPT anywhere on the web

    2022 · chromewebstore.google.com · its alternatives →

  13. 13

    OpenAI’s latest advancements at your fingertips

    2023 · play.google.com · its alternatives →

  14. 14

    Greetings! YakGPT is a simple, frontend-only, ChatGPT UI you can use to either chat normally, or, more excitingly, use your mic + OpenAI's Whisper API to chat hands-free. Some features: * A few fun characters pre-installed * No tracking or analytics, OpenAI is the only thing it calls out to * Optimized for mobile use via hands-free mode and cross-platform compressed audio recording * Your API key and chat history are stored in browser local storage only * Open-source, you can either use the deployed version at Vercel, or run it locally Planned features: * Integrate Eleven Labs & other TTS…

    2023 · yakgpt.vercel.app · its alternatives →

  15. 15

    Not just another ChatGPT user-interface

    2023 · chatpad.ai · its alternatives →

  16. 16

    Enterprise-grade security, privacy and powerful ChatGPT

    2023 · openai.com · its alternatives →

  17. 17

    An API from OpenAI for ChatGPT

    2023 · openai.com · its alternatives →

  18. 18

    ChatGPT-like customer interactions in a website widget

    2024 · openwidget.com · its alternatives →

  19. 19

    Hi HN, I’m the founder of Pangea. We’ve built a developer platform where you can easily add security to your code through a simple set of APIs - features like authentication, secrets management, audit logging, redaction of PII, restricting embargoed countries, known threat actor intelligence, etc. With the ChatGPT and LLM explosion, we thought of ways to reduce the risk of both the inputs and outputs from these services. Our NextJS sample app adds a security layer on top of ChatGPT with various security services that you can implement quickly. It’s basically a front end to the OpenAI API…

    2023 · github.com · its alternatives →

  20. 20

    Free AI with your ChatGPT account. Contribute to EvanZhouDev/openai-oauth development by creating an account on GitHub.

    Mar 2026 · github.com · its alternatives →

  21. 21

    Hi everyone, we’re a small team, supported by Mozilla, who are working on re-imagining a UI for training, tuning and testing local LLMs. Everything is open source. If you’ve been training your own LLMs or have always wanted to, we’d love for you to play with the tool and give feedback on what the future development experience for LLM engineering could look like.

    2025 · github.com · its alternatives →

  22. 22

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

    2023 · chataiapps.com · its alternatives →

  23. 23WM

    Try it out! https://glhf.chat/ Hey HN! We’ve been working for the past few months on a website to let you easily run (almost) any open-source LLM on autoscaling GPU clusters. It’s free for now while we figure out how to price it, but we expect to be cheaper than most GPU offerings since we can run the models multi-tenant. Unlike Together AI, Fireworks, etc, we’ll run any model that the open-source vLLM project supports: we don’t have a hardcoded list. If you want a specific model or finetune, you don’t have to ask us for it: you can just paste the Hugging Face link in and…

    2024 · glhf.chat · its alternatives →

  24. 24

    A new app for Slack that uses ChatGPT

    2023 · salesforce.com · 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 →