START A BITCredits
START A BIT is built with tools that people share openly. Here is each one: what it does here, who made it, and its licence.
The Code lab
| What | What it does here | Licence |
|---|---|---|
| CodeMirror 6 and Lezer, Marijn Haverbeke and others | the code editor, and the colours of code on every page | MIT |
| Pyodide | Python 3.10 to 3.14 in the browser, with packages like numpy and matplotlib (each under its own licence) | MPL-2.0 |
| MicroPython 1.29, Damien George and others | MicroPython in the browser, and on the simulated Raspberry Pi Pico and ESP32 | MIT |
| YoWASP Clang | compiles C and C++ in the browser | ISC; Clang and LLVM: Apache-2.0 with LLVM exception |
| browser_wasi_shim, bjorn3 | runs the compiled C and C++ programs | MIT or Apache-2.0 |
| avr-gcc 7.3, binutils, AVR-LibC, the Arduino AVR core 1.8.8 and its libraries | the Arduino IDE's compiler, built for the browser by us; where every source is | GPL, LGPL and BSD, as each part says |
| avr8js, Uri Shaked and others | the simulated ATmega328P chip of the Arduino UNO and Nano | MIT |
| rp2040js, Uri Shaked and others, with the RP2040 boot ROM (Raspberry Pi) | the simulated Raspberry Pi Pico | MIT; boot ROM: BSD-3-Clause |
| esp32sim, Joakim Eriksson, Alice and Mattia Fiumara, with the ESP32 ROM (Espressif) | the simulated ESP32 | MIT; ROM: Apache-2.0 |
| Wokwi Elements, Uri Shaked and others, with Lit | the drawings of the boards and parts on the simulated board | MIT; Lit: BSD-3-Clause |
| Microsoft MakeCode | the Micro:bit simulator and its blocks, opened from our pages | MIT |
Pictures, projects and sign-in
| What | What it does here | Licence |
|---|---|---|
| Fritzing part drawings | the parts in the wiring pictures of the projects | CC BY-SA 3.0 |
| Fluent Emoji, Microsoft | the sign-in pictures | MIT |
| MediaPipe Tasks Vision 1.2.0 and its face detector, Google | finds faces in a picture before it is sent, to cover them with a sticker | Apache-2.0 |
| NSFWJS 4.4.0, Infinite Red | refuses unsuitable pictures, on the device | MIT |
| TensorFlow.js and the Teachable Machine image library, Google | run your own Teachable Machine picture model on the AI link page | Apache-2.0 |
| QR Code Generator 2.0.4, Kazuhiko Arase | the QR codes of the live quiz and the website card | MIT |
| Lexend, the Lexend Project Authors | the font of the headings, made to be easy to read | SIL Open Font License 1.1 |
The licence texts come with the files themselves, in assets/vendor/ and assets/fonts/.
Something missing or wrong here? Please tell us.