The best open source alternative to Arduino IDE is PlatformIO. If that doesn't suit you, our users have ranked more than 25 alternatives to Arduino IDE and 13 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Arduino IDE are Arduino Eclipse plugin, ArduinoEditor, UECIDE and OneWare Studio.
An open source ecosystem for IoT development. Cross-platform IDE and unified debugger. Remote unit testing and firmware updates.
Arduino Editor is a modern development environment for Arduino projects built on the Clang toolchain. It provides fast and precise code completion, smart navigation tools, real-time error highlighting, and full support for multi-file Arduino sketches.
OneWare Studio is the next generation IDE for electronics development. It supports a broad range of development languages including VHDL, Verilog, C++, and more. It is designed to streamline electronics development with features like a high-speed simulation viewer and advanced...
KTechLab is an IDE for microcontrollers and electronics. It supports circuit simulation, program development for microcontrollers and simulating the programmed microcontroller together with its application circuit.
Arduino Studio is a new open source development environment for the Arduino Programming Language. Instead of a monolithic architecture and a centralized development model, Arduino Studio take advantage of Adobe Brackets Editor's pluggable system.
It's a cross between Glade / Visual Studio — the idea is that most 'action' code for an application is actually quite simple - so entering the code on the event handlers for a widget makes the proximity of code to action better.
Program your arduino online. codebender is a web platform for hackers, makers and artists. Code, store and manage your Arduino sketches on the cloud, and even compile and flash them to your Arduino. Right from your browser.
WinAVR (tm) is a suite of executable, open source software development tools for the Atmel AVR series of RISC microprocessors hosted on the Windows platform. Includes the GNU GCC compiler for C and C++.
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PlatformIO doesn't have definitions for the ESP32-S3-DevKitC-1. They force you to use the DevKitM-1, which is different. Also, PlatformIO doesn't have a full set of BLE libraries (e.g. doesn't support BLE descriptors)