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Dev tools · alternatives · 2026

24 alternatives to SimScale

Simulation software reinvented for the web

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. SimScale launched in 2015; newer entries below may have overtaken it.

  1. 1
    Sim▲577

    Open-source workspace for AI agents and workflows

    Jul 2026 · sim.ai · its alternatives →

  2. 2

    Hey HN, Waleed here. We're building Sim (https://sim.ai/), an open-source visual editor to build agentic workflows. Repo here: https://github.com/simstudioai/sim/. Docs here: https://docs.sim.ai. You can run Sim locally using Docker, with no execution limits or other restrictions. We started building Sim almost a year ago after repeatedly troubleshooting why our agents failed in production. Code-first frameworks felt hard to debug because of implicit control flow, and workflow platforms added more overhead than they removed. We wanted…

    Dec 2025 · github.com · its alternatives →

  3. 3
    SimplAIfree tier, from $5/mo▲589

    Hey HN, I've been building SimplAI for the past several months — it's a platform for building, testing, and deploying LLM-powered agents and multi-step workflows. The problem I kept running into: spinning up an AI agent pipeline means stitching together prompt management, tool calling, memory, evals, and deployment — often from scratch every time. SimplAI tries to be the layer that handles all of that so you can focus on what your agent actually does. What it does: - Visual + code-first workflow builder for chaining LLM calls, tools, and APIs - Built-in prompt versioning and A/B testing…

    2025 · simplai.ai · its alternatives →

  4. 4

    2023 · plant.max-richter.dev · its alternatives →

  5. 5

    Hi HN, we are building SimBricks, an open-source simulation framework for heterogeneous systems, especially with custom hardware. SimBricks modularly combines existing simulators for machines, networks, and hardware, allowing you to build, test, and evaluate intricate complete systems in a virtual environment. Head over to the SimBricks website (https://simbricks.github.io/, also has a quick demo video) to learn more. We have pre-built docker images, and you can even immediately play around on codespaces. Concrete use-cases: - Evaluate HW accelerators, from early design with…

    2024 · simbricks.github.io · its alternatives →

  6. 6RT

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

    2023 · replicad.xyz · its alternatives →

  7. 7
    Simpla▲360

    The modular content system for frontend developers

    2016 · simpla.io · its alternatives →

  8. 8
    Celer3D▲81

    Collaborative parameterised 3D modelling web application

    2023 · its alternatives →

  9. 9

    Just sharing this project [0] I've worked on a while ago, it's not that interesting but I was proud of making it. It has a CLI and a GUI that is done with Dear ImGui and includes an instruction editor, memory and registers viewer, and a canvas that is manipulated with an extra instruction made specifically for the GUI! This is not my first attempt at a virtual machine implementation, I've done the popular LC-3 VM before [1], check it out if you're interested to see Rust code rather than C++ ;) [0]: https://github.com/faresbakhit/vole-sim [1]:…

    2025 · faresbakhit.github.io · its alternatives →

  10. 10PB

    2016 · prandtl.design · its alternatives →

  11. 11
    Simbla▲90

    Drag & drop responsive website builder

    2016 · simbla.com · its alternatives →

  12. 12

    Mobile device simulator and professional mockup studio.

    Jun 2026 · chromewebstore.google.com · its alternatives →

  13. 13

    Trading and investing is now SIMple

    2025 · studio-gf4gvz979-vishwa24816s-projects.vercel.app · its alternatives →

  14. 14

    Hi HN, I’m a former C++ dev turned Product Manager. I’ve noticed many engineers struggle with the "politics" side of things when they become Leads. To help with this, I’m building a text-based simulator. It is NOT an AI chatbot. It is a hand-crafted, branching narrative (logic tree) based on real experiences. I just launched the first scenario: "The Backchannel VP." The Setup: Your VP Engineering is bypassing you and giving tasks directly to your juniors, causing chaos. Your Goal: Stop the backchanneling without getting fired. It’s a short, specific puzzle. I’d love to know if you think the…

    Jan 2026 · apmcommunication.com · its alternatives →

  15. 15

    A collaborative plaform for digital contract negotiations.

    2021 · simplifire.world · its alternatives →

  16. 16TC

    Hi HN: I’m Saga, co-founder of Timmerse https://timmerse.com. We are a customizable 3D immersive real-time interactions platform.The reason for not wanting to call ourself metaverse is similar to Apple, it is hard to define what it is and what it is not, Apple calls Vision Pro a spatial computing device, This is a practical product, and we hope our platform can also provide real experience to users. Our product originates from YC W22, initially indeed inspired by [gather.town](http://gather.town/). Our engineers have a rich 3D foundation, so we hope to implement a 3D…

    2024 · timmerse.com · its alternatives →

  17. 17

    Easiest Platform to Launch Cybersecurity Simulations

    Dec 2025 · simulationslabs.com · its alternatives →

  18. 18

    I've been presenting at local meetups about Context Engineering, RAG, Skills, etc.. I even have a vbrownbag coming up on LinkedIn about this topic so I figured I would make a basic example that uses bedrock so I can use it in my talks or vbrownbags. Hopefully it's useful.

    Apr 2026 · github.com · its alternatives →

  19. 19

    Hey HN, I'm Charles, the solo founder of Continuum (https://continuum-app.xyz/). Continuum is a financial planning web app for people with 1-15M. It helps you create simulations of job offers, house purchases, and life events. Its goal is to replace human advisors that cost thousands, or even worse, take AUM fees of 1%. The MVP includes AI voice onboarding, scenario and mural creation, and 4 modules. The simulation math engine is code to ensure determinism. The LLMs don't do any simulation math. Demo: https://youtu.be/EDUK26Rs0cE?si=hCSdgSDkgKJt3Ni2 The biggest…

    Aug 2026 · continuum-app.xyz · its alternatives →

  20. 20

    Transforming complex engineering into automated workflows.

    2018 · cceintl.com · its alternatives →

  21. 21

    Software platform for AI-driven physics simulations

    2023 · its alternatives →

  22. 22

    CADWOLF integrates mathematics, documentation, and CAD to coordinate and automate the design of large structures.

    2015 · cadwolf.com · its alternatives →

  23. 23

    The Future of Engineering Simulation

    2021 · its alternatives →

  24. 24

    Terminal UI for iOS Simulators and Android Emulators

    Mar 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 →