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Dev tools · alternatives · 2026

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24 alternatives to FluidCAD – Parametric CAD with JavaScript

Hello HN users, This is a CAD by code project I have been working on on my free time for more than year now. I built it with 3 goals in mind: - It should be familiar to CAD designers who have used other programs. Same workflow, same terminology. - Reduce the mental effort required to create models as much as possible. This is achieved by: - Provide live rendering and visual guidance as you type. - Allow the user to reference existing edges/faces on the scene instead of having to calculate everything. - Provide interactive mouse helpers for features that are hard to write by code: Only 3…

FluidCAD is a parametric CAD tool that lets users create 3D models using JavaScript code. Designed for engineers and designers familiar with traditional CAD workflows, it aims to reduce complexity through live… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

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    Paraflow ▲502

    Paraflow is a canvas-based agent that defines, designs, and delivers. Create PRD, user flow, UI, prototype, and frontend code—all in one Canvas.

    Nov 2025 · paraflow.com · its alternatives →

  2. 2

    Build 3D interactions visually, without writing any code

    2015 · 3d-transforms.webflow.com · its alternatives →

  3. 3
    Spline▲1,191

    Design tool for 3D web experiences

    2020 · spline.design · its alternatives →

  4. 4

    Hey HN! I'm Zach from Adam (https://adam.new/). We’re building an AI co-pilot for mechanical CAD software. As part of our broader research, we built a browser-based Text-to-CAD app (https://news.ycombinator.com/item?id=44182206) and are now open sourcing it. This is a React SPA with a Supabase backend. What it does: * Generates parametric 3D models from natural language descriptions, with support for both text prompts and image references * Outputs OpenSCAD code with automatically extracted parameters that surface as interactive sliders for instant dimension…

    2025 · github.com · its alternatives →

  5. 5

    Hey HN. Over the last half a year I have been working on a 3D CAD programming language called DSLCAD. Today I am here to show my first release! It is heavily inspired by OpenSCAD which got me hooked on the idea of a CAD programming language and what it can do. Please let me know what you think. Ill be in the thread to answer any questions you may have.

    2023 · github.com · its alternatives →

  6. 6RT

    The library to build browser based 3D models with code.

    2023 · replicad.xyz · its alternatives →

  7. 7
    Mesh▲608

    Design 3D illustrations & icons in a quick and engaging way

    2022 · morflax.com · its alternatives →

  8. 8

    In the past I've used declarative diagram generation tools like Mermaid.js a lot for quickly drawing up things but for presentations or deliverables I find that I have to then move the generated diagrams over to a tool like Lucidchart which allows full control of the organization and customization. Therefore I am now working on this to combine the benefits of both into just one tool which can do both functions. The project is certainly in the early stages but if you find yourself making architecture diagrams I'd love to hear your thoughts on the idea or even a Github issue for a feature…

    Oct 2025 · github.com · its alternatives →

  9. 9CE
  10. 10

    Automate manual processes without spreadsheets or code

    2018 · parabola.io · its alternatives →

  11. 11

    Sketch plugin to make your responsive designs more efficient

    2015 · github.com · its alternatives →

  12. 12

    SolidCraft: an open-source parametric 3D CAD application built in pure Rust. Desktop, web, and automation through MCP. - bherbruck/solidcraft

    9d ago · github.com · its alternatives →

  13. 13
    Celer3D▲81

    Collaborative parameterised 3D modelling web application

    2023 · its alternatives →

  14. 14

    Hi HN! I’m Alex from Parabola (https://parabola.io). Parabola is a visual programming tool for creating functional data flows that everyone can use. It’s entirely drag-and-drop, handles data sizes much larger than a traditional spreadsheet, calculates everything live, and can run your flows on a schedule of your choosing. I used to work in strategy consulting, doing data analytics for SMBs and Fortune 500 companies. The amount of time wasted on menial tasks was astounding. Things like cleaning data, generating custom reports, creating human workflows to solve shortcomings in third…

    2018 · parabola.io · its alternatives →

  15. 15

    I've been going through Cem Yuksel's "Introduction to Computer Graphics" course and thought that writing a volume renderer would be a good way to test my knowledge. It is a common technique used to render 3D medical data. Works by ray marching a specific step size, reading a 3D texture (e.g. MRI data), and calculating opacity values. Code should be easy to get started with for anyone familiar with the JS ecosystem. Questions for the HN community: I spent 20-25% of the entire time just setting up the project and fighting issues with the JavaScript ecosystem. This experience has made me…

    2024 · github.com · its alternatives →

  16. 16

    Extremely powerful, completely free 3D CAD modeling

    Mar 2026 · wiki.freecad.org · its alternatives →

  17. 17
  18. 18AI

    (space = reset) Fluid mechanics is an extremely interesting topic and I have been creative coding for a couple of months now. Therefore I started working on flow fields in processing. It had so much fun playing around with the different parameters in this project, I decided to rewrite in p5.js an added a control panel. You can change most of the parameters (within some constraints I thought to be reasonable), randomize the values and export and import settings. Hopefully some coders here get inspired and also join the great creative coding community.

    2024 · synapse.nugatio.com · its alternatives →

  19. 19
    Flowkit▲296

    Sketch library for user flows/content maps/annotations

    2017 · useflowkit.com · its alternatives →

  20. 20
    Whisker▲94

    Create and edit CAD models into production-ready prototypes

    Mar 2026 · whisker.spatialkittens.com · its alternatives →

  21. 21
    agentcad▲110

    A CAD design tool for coding agents (free + open source)

    Jun 2026 · agentcad.dev · its alternatives →

  22. 22
    PixyCAD ▲126

    Fast & precise 3D CAD built natively for iPad and Mac

    Jul 2026 · pixycad.com · its alternatives →

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  24. 24

    Hi HN, I’m the creator of SynapsCAD, an open-source desktop application I've been building that combines an OpenSCAD code editor, a real-time 3D viewport, and an AI assistant. You can write OpenSCAD code, compile it directly to a 3D mesh, and use an LLM (OpenAI, Claude, Gemini, ...) to modify the code through natural language. Demo video: https://www.youtube.com/watch?v=cN8a5UozS5Q A bit about the architecture: - It’s built entirely in Rust. - The UI and 3D viewport are powered by Bevy 0.15 and egui. - It uses a pure-Rust compilation pipeline (openscad-rs for parsing and csgrs…

    Feb 2026 · github.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 →