PlatformIO is described as 'IDE is the next generation integrated development environment for IoT:' and is a IDE in the development category. There are more than 10 alternatives to PlatformIO for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Arduino IDE, which is both free and Open Source. Other great apps like PlatformIO are Ktechlab, LabsLand, UECIDE and embedXcode.
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
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.
LabsLand lets students access real educational laboratories through the Internet. Schools, institutions and homeschoolers can use it to provide real labs and real practical and scientific education without having the physical equipment themselves.
MicroCode Studio is a powerful, visual Integrated Development Environment (IDE) with In Circuit Debugging (ICD) capability designed specifically for microEngineering Labs PICBASIC™ and PICBASIC PRO™ compiler.
A set of software tools for designing embedded applications and IoT connected devices using any 32-bit microcontrollers and connecting to any cloud infrastructure. All in Python & hybrid C/Python language.