Replicad, the Library for CAD in the Browser
The library to build browser based 3D models with code.
Replicad, the Library for CAD in the Browser launched on February 20, 2023 with 101 votes, #440 of 3,829 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Replicad is a CAD library designed to run in web browsers, enabling users to create and manipulate 3D models directly online without requiring desktop software installation. It allows engineers, designers, and hobbyists to build parametric designs through code-based workflows. The tool is particularly suited for those who prefer programmatic approaches to CAD design and need accessible, cloud-based modeling capabilities.
written from the facts on this page · September 2026
From the sources
You can easily sketch, give shape and then modify your shape with a streamlined API inspired by cadquery and cascade studio . replicad is just javascript, you have the benefit of all the libraries you love, the tooling you are used to and it runs in all modern browsers. You get all the nice feature of a battle tested kernel: STEP export, easy fillets andfrom replicad.xyz
Does a similar job
all alternatives →- FPFluidCAD – Parametric CAD with JavaScriptApr 2026 · fluidcad.io · ▲160
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…
ReplicasJun 2026 · replicas.dev · ▲239Hey HN! I'm Connor, creator of Replicas. I'm a heavy Codex/Claude Code user, and I wanted to hand off tasks to agents like I would to an engineer - kick something off before work, let it scaffold while I'm at lunch, even come back to a ready PR. The problem: existing alternatives use workspace VMs that are black boxes. I have no access to any of them - they can't run tests, read logs, or use tools like the Playwright MCP (which I use to verify agents actually fixed what they claim to fix). Replicas gives agents real cloud workspaces where they can: - Run your test suite and read the…
DSLCad – a programming language and interpreter for building 3D models2023 · github.com · ▲198Hey 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.
Open-sourcing our text-to-CAD app2025 · github.com · ▲179Hey 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…
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