AI · alternatives · 2026
24 alternatives to UnionX – GPT4-powered Copilot for Work with Jupyter-style notebooks
Hey HN community! We're excited to introduce UnionX, an AI Copilot for Work designed to revolutionize the way you perform research, write long documents, and extract insights. Our platform is perfect for PMs, students, lawyers, finance professionals, and more. UnionX is built on cutting-edge technology, leveraging OpenAI's GPT4 model and Jupyter notebook-style workflows to create a seamless, AI-powered experience. Our block-based editor allows you to easily upload documents, analyze them, and generate new insights or docs with the help of AI. If you don't have ideas about what to do with…
UnionX is an AI copilot that uses GPT-4 to help users research, analyze documents, and write long-form content. It features Jupyter-style notebooks with a block-based editor for uploading and processing documents… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. UnionX – GPT4-powered Copilot for Work with Jupyter-style notebooks launched in 2023; newer entries below may have overtaken it.
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Writingmate▲454AI copilot for Google Docs, Slides, Sheets with 20k+ users
2023 · chromewebstore.google.com · its alternatives →
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Pieces Copilot+▲714Remember anything with a real-time, on-device AI assistant
2024 · pieces.app · its alternatives →
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WritingMate.ai▲476A chrome extension that allows you to communicate with GPT-4 Turbo in a context of the webpage and export results in Google Workspace tools
2023 · writingmate.ai · its alternatives →
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InlineGPT▲337Inline AI copilot, available right in all your apps
2024 · inlinegpt.com · its alternatives →
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Fast and efficient models optimized for coding and subagents
Mar 2026 · openai.com · its alternatives →
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Hey HN! We’ve forked Jupyter Lab and added AI code generation features that feel native and have all the context about your notebook. You can see a demo video (2 min) here: https://www.tella.tv/video/clxt7ei4v00rr09i5gt1laop6/view Try a hosted version here: https://pretzelai.app Jupyter is by far the most used Data Science tool. Despite its popularity, it still lacks good code-generation extensions. The flagship AI extension jupyter-ai lags far behind in features and UX compared to modern AI code generation and understanding tools (like…
2024 · github.com · its alternatives →
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Build AI Copilots & AI Agents into any React app | 12k Stars
2024 · copilotkit.ai · its alternatives →
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The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol - CopilotKit/CopilotKit
2023 · github.com · its alternatives →
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Uxia▲548Hi HN, As PMs (Google, Gopuff, Shiji), my cofounder and I ran hundreds of user tests over the years. And every time it felt broken: It could take 2–5 days just to get enough usable results We spent hours watching recordings to extract a handful of insights “Professional testers” rushed through tasks for pay, creating biased feedback Platforms often started at €10k+ per year, with hidden fees on top The result: slow iteration cycles, unreliable feedback, and user testing that often felt like a tax rather than a tool. We started asking: what if AI could help? Could synthetic users replicate…
2025 · uxia.app · its alternatives →
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Enable your users to collaborate with AI inside your product
2025 · liveblocks.io · its alternatives →
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Hello! We’re Kevin and Sohrab from Hestus (https://www.hestus.co). We're working on an AI copilot for CAD. Today we're releasing a simple sketch helper for Fusion 360 and would love your feedback. Here’s a quick demo: https://www.youtube.com/watch?v=L9n_eY-fM_E. Why we’re doing this: Mechanical engineers excel at generating initial design concepts but get bogged down translating ideas into final designs due to tedious, repetitive tasks. Our goal is to automate these mundane processes, allowing engineers to focus on the creative aspects of design. Having worked at…
2024 · hestus.co · its alternatives →
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Hey HN! I’m Zach one of the co-founders of Adam (https://www.adamcad.com). We're building AI-powered tools for CAD and 3D modeling [1]. We’ve recently been exploring a new way to bring GPT-style image editing directly into 3D model generation and are excited to showcase this in our web-app today. We’re calling it creative mode and are intrigued by the fun use cases this could create by making 3D generation more conversational! For example you can put a prompt in such as “an elephant” then follow it up by “have it ride a skateboard” and it preserves the context, identity and…
2025 · adamcad.com · its alternatives →
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Thank you for checking out the product! This product is great for individual makers, teams, and enterprises to create content, code, images, and more as an alternative to ChatGPT. We offer access to the latest and greatest AI models, complete data privacy ensured, and support a huge (32k, 128k, 200k) context window for all of our plans. Compared to ChatGPT, who only offers 32k context window until you upgrade to enterprise, we offer A huge 4x upgrade to 128k for GPT4 and 200k for Claude. This allows all of our plans to ask questions against a huge 500 page documents or a set of documents. We…
2025 · parallellabs.app · its alternatives →
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Hey HN, we're building Thread (https://thread.dev/) an open-source Jupyter Notebook that has a bunch of AI features built in. The easiest way to think of Thread is if the chat interface of OpenAI code interpreter was fused into a Jupyter Notebook development environment where you could still edit code or re-run cells. To check it out, you can see a video demo here: https://www.youtube.com/watch?v=Jq1_eoO6w-c We initially got the idea when building Vizly (https://vizly.fyi/) a tool that lets non-technical users ask questions from their data. While…
2024 · github.com · its alternatives →
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Searchie Copilot▲112Save time and do more with your AI-powered content assistant
2023 · membership.io · its alternatives →
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Hey HN! I built SimplePDF Copilot: an AI assistant that can interact with the PDF editor. It fills fields, answers questions, focuses on a specific field, adds fields, deletes pages, and so on. It's built on top of SimplePDF that I started 7 years ago, pioneering privacy-respecting client-side pdf editing, now used monthly by 200k+ people. As for the privacy model: the PDF itself never leaves the browser. Parsing, rendering, and field detection all run client-side. The text the model needs (and your messages) goes to whatever LLM you point at. By default that's our demo proxy (DeepSeek V4…
May 2026 · copilot.simplepdf.com · its alternatives →
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Streamline your design process with 800 expert prompts
2023 · subhashpal.gumroad.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 →