Dev tools · alternatives · 2026

24 alternatives to OpenPolotno

Open-source Polotno alternative for design editors

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Polotno Studio▲190

   Canva-like design editor. No signups, no ads, no paywalls.

   2021 · polotno.com · its alternatives →

2. 2
   Polotno SDK▲96

   Toolkit to create web design editors

   2021 · polotno.com · its alternatives →

3. 3
   Open Source Canva Clone▲232

   2022 · github.com · its alternatives →

4. 4
   OpenKnowledge – open source AI-first alternative to Obsidian/Notion▲381

   Hi HN, Nick here. We’re launching OpenKnowledge (https://openknowledge.ai/), a “what you see is what you get” markdown editor that has direct integrations with Claude, Codex, and other agents. Available as MacOS app or Web UI+CLI. Fully free/local and OSS. We built this because we wanted a Notion-like experience for writing and sharing markdown files across our team. Obsidian is the best alternative we tried, but found it doesn’t have a true WYSWIG UI and it didn’t integrate well with Claude/Codex outside of community plugins. So we built OpenKnowledge. It takes…

   Jun 2026 · github.com · its alternatives →

5. 5EI
   Edtr.io – Intuitive web editor, open source and fully adaptable▲234

   2020 · edtr.io · its alternatives →

6. 6IO
   I open-sourced my web app alternative to Illustrator▲644

   2014 · mondrian.io · its alternatives →

7. 7
   An open-source, collaborative, WYSIWYG Markdown editor▲460

   Inspired by the design and UI/UX of apps like Notion, and utility of open-source apps like StackEdit, I decided to create a minimalistic, local-only WYSIWYG Markdown editor. Some features worth highlighting: - Monaco editor and Prettier integration for code snippets - Tables (apparently the holy grail of WYSIWYG editing) - Embeds (for CodePen, CodeSandbox and YouTube, most useful for HTML or JSON exports) - Accepts Markdown paste-in, and "exports"/generates HTML, Markdown and JSON outputs - Collaboration (with real-time awareness and initial commenting system, available only when…

   2023 · editor.vrite.io · its alternatives →

8. 8
   Yoopta-Editor▲334

   Open-source text-editor

   2024 · yoopta.dev · its alternatives →

9. 9
   Open-source alternative to Retool▲420

   🔥 🔥 🔥 The Open Source Retool Alternative. Contribute to openblocks-dev/openblocks development by creating an account on GitHub.

   2022 · github.com · its alternatives →

10. 10
    rnbw▲346

    design, code

    2024 · its alternatives →

11. 11
    Ezno, a TypeScript checker written in Rust, is now open source▲113

    Open sourcing Ezno's checker and trying out / previewing the JavaScript type checker today

    2023 · github.com · its alternatives →

12. 12
    Open Design SDK▲139

    Read and display data from designs, using code

    2021 · opendesign.dev · its alternatives →

13. 13
    Opengrep▲340

    The open source code security engine

    2025 · opengrep.dev · its alternatives →

14. 14
    Webstudio▲171

    An open source visual development platform

    2022 · webstudio.is · its alternatives →

15. 15
    Insomnia Designer – Open-source collaborative editor for API design▲317

    Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

    2020 · insomnia.rest · its alternatives →

16. 16
    Open Source Stash▲264

    The best open-source alternatives for you next maker project

    2020 · opensourcestash.com · its alternatives →

17. 17
    Edtr.io▲133

    Intuitive WYSIWYG web editor, open source & fully adaptable.

    2020 · its alternatives →

18. 18IB
    I built an indie, browser-based MMORPG▲340

    I've been working on an MMORPG that is now in alpha as a solo developer. Here are the major open source technologies that I use: Blender - 3D modeling software for creating the overall environment and every game object. I've gotten a lot of CC and Public Domain assets from https://poly.pizza GLTF - I export assets from blender to the GLTF asset format JSON - I write a JSON config for every game object that describes things like its name, its interactions, its collisions, etc. Node.js exporter - I iterate over the environment and every asset to create a scene hierarchy. I use…

    2024 · alpha.reconquer.online · its alternatives →

19. 19
    Open Source Alternative To▲377

    Discover open source alternatives to your proprietary SaaS

    2022 · opensourcealternative.to · its alternatives →

20. 20
    VPaint▲145

    The next Adobe Illustrator and After Effects, open-source

    2021 · vpaint.org · its alternatives →

21. 21
    Open source alternative to ChatGPT and ChatPDF-like AI tools▲234

    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…

    2023 · github.com · its alternatives →

22. 22
    I built an offline, open‑source desktop Pixel Art Editor in Python▲214

    It requires no registration, no installation, and no configuration. Just run it on any computer and start drawing freely.

    2025 · github.com · its alternatives →

23. 23
    Open Design▲139

    Dev toolkit to read, change & display data from design files

    2021 · avocode.com · its alternatives →

24. 24
    Puck▲188

    Open-source visual editor for React

    2025 · puckeditor.com · its alternatives →

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 →