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.

the python package index (pypi) is a repository of software for the python programming language.

this c# tutorial helps you master c# programming from scratch and shows you how to apply c# programming effectively.

ogc is a consortium of experts committed to improving access to geospatial, or location information. we connect people, communities, and technology to solve global challenges and address everyday needs.