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Dev tools · alternatives · 2026

24 alternatives to OpenSCAD configurable calendar 3D model

I created a highly configurable calendar 3D model using OpenSCAD. This project uses Zeller’s Congruence to automatically adjust the calendar layout for any year. Just change the year in the configurator, and the model updates accordingly. The link contains a little more of the backstory and the downloadable model from a 3rd-party site, additionally the full source code is included in the post. Some highlights: - Implemented date calculations entirely in OpenSCAD (with no built-in date support, which was challenging but fun). - Customizable layout, multi-material printing support, and…

OpenSCAD Configurable Calendar 3D Model is a parametric design tool for creating customized physical calendars using OpenSCAD. It automatically calculates dates for any year using Zeller's Congruence, with no built-in… 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

    The simple calendar and booking solution

    2024 · tidycal.com · its alternatives →

  2. 2

    I love the looks and UX of the Google calendar. But I wanted to have a version I could use more freely in my own projects, still looking similar to the one from Google.

    2024 · schedule-x.dev · its alternatives →

  3. 3

    Extremely powerful, completely free 3D CAD modeling

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

  4. 4
    zcal▲481

    The free Calendly alternative that makes scheduling personal

    2021 · zcal.co · its alternatives →

  5. 5

    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 →

  6. 6

    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 →

  7. 7LP

    LuaCAD models solids in Lua rather than the OpenSCAD language, with operator overloading for CSG (`a + b`, `a - b`, `a * b`). It ships with a CLI and a desktop app, including a preview area and a text editor. I've always been a big fan of OpenSCAD, but the SCAD language itself is unfortunately quite cobbled-together and is a very poorly designed programming language. LuaCAD takes all the good parts of OpenSCAD and combines them with one of the best scripting languages. It has now completely replaced OpenSCAD for me, and I think it provides a better experience than OpenSCAD for all use cases.…

    Aug 2026 · luacad.ad-si.com · its alternatives →

  8. 8FP

    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…

    Apr 2026 · fluidcad.io · its alternatives →

  9. 9
    zcal▲259

    Beautiful Typeform-inspired scheduling pages

    2025 · zcal.co · its alternatives →

  10. 10
    PixyCAD ▲126

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

    Jul 2026 · pixycad.com · its alternatives →

  11. 11AC

    Inspired by Minimal[1] and Netnik[2] printable calendars, I wanted a way to fit as many habits on a single sheet of paper as possible. This is very much a work-in-progress, so beware of bugs. I will flush it out over the next few days. Happy New Year, everyone! [1] https://useminimal.com/habit-tracker [2] https://neatnik.net/calendar/

    2024 · habitcalendar.co · its alternatives →

  12. 12

    Design & UX in a free printable calendar

    2020 · jamon.digital · its alternatives →

  13. 13

    Encrypted, decentralized alternative to Google calendar

    2019 · cal.openintents.org · its alternatives →

  14. 14BA
  15. 15

    Create pipes to filter, transform, and sync events between Google Calendar, Outlook, and Apple Calendar. Build visually, describe in plain English, or write code.

    Apr 2026 · calendarpipe.com · its alternatives →

  16. 16
    Simpliday▲137

    An all-In-One Calendar

    2016 · apps.apple.com · its alternatives →

  17. 17PC
  18. 18

    Turn your calendar into a live Lock Screen wallpaper

    Feb 2026 · getcalendarly.com · its alternatives →

  19. 19

    React.js Yearly Calendar Component. Contribute to BelkaLab/react-yearly-calendar development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  20. 20

    The First Paper Planner Connected to Digital Calendars

    2016 · sliceplanner.com · its alternatives →

  21. 21
    Whisker▲94

    Create and edit CAD models into production-ready prototypes

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

  22. 22
    Yearly▲87

    Visualize life trends with heatmap calendars

    2024 · yearly.quest · its alternatives →

  23. 23

    Publish calendars that users can easily hook into.

    2014 · its alternatives →

  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 →