| Software | Arduino Support | Free? | |----------|----------------|-------| | (online) | Excellent – Uno, Mega, ESP32 | ✅ Full | | Tinkercad Circuits | Blocks + text code | ✅ Full | | SimulIDE | Basic hex file support | ✅ Open source | | Proteus Trial | Full for 30 days | ✅ Temporary |