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Velxio icon

Velxio

Emulate Arduino, ESP32 & Raspberry Pi. in your browser. Write code, compile, and run on 19 real boards — Arduino Uno, ESP32, ESP32-C3, Raspberry Pi Pico, Raspberry Pi 3, and more. No hardware, no cloud, no limits.

Raspberry Pi Pico simulation — ADC read test with two potentiometers, Serial Monitor showing live output, and compilation console at the bottom.

Cost / License

  • Freemium (Subscription)
  • Open Source (AGPL-3.0)

Platforms

  • Online
  • Self-Hosted  Can install Self-Hosted either through Docker or manual setup.
Arduino Uno driving an ILI9341 240×320 TFT display via SPI — rendering a real-time graphics demo using Adafruit_GFX + Adafruit_ILI9341.
Library Manager loads the full Arduino library index on open — browse and install libraries without typing first.
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Component Picker showing 48 available components with visual previews, search, and category filters.
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Velxio information

  • Developed by

    UY flagdavidmonterocrespo24

  • Licensing

    Open Source (AGPL-3.0) and Freemium product.

  • Pricing

    Subscription ranging between $15 and $35 per month + free version with limited functionality.

  • Written in

  • Alternatives

    5 alternatives listed

  • Supported Languages

    • English
    • Spanish
    • Italian
    • French
    • German
    • Japanese
    • Russian

AlternativeTo Category

Education & Reference

GitHub repository

  •  1,962 Stars
  •  181 Forks
  •  23 Open Issues
  •   Updated  
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What is Velxio?

A fully local, open-source multi-board emulator. Write Arduino C++ or Python, compile it, and simulate it with real CPU emulation and 48+ interactive electronic components — all running in your browser.

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