the yocto project (yp) is an open source collaboration project that helps developers create custom linux-based systems regardless of the hardware architecture.

the linux documentation project is working towards developing free, high quality documentation for the linux operating system. the overall goal of the ldp is to collaborate in all of the issues of linux documentation.

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

market-leading mit licensed open source real-time operating system (rtos) for microcontrollers and microprocessors. includes iot and general purpose libraries.

the backend application platform with everything you need to build your product.