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

deploy enterprise-ready postgresql on your choice of platform and infrastructure with commercial support from crunchy data.

home page of the apache software foundation

php is a popular general-purpose scripting language that powers everything from your blog to the most popular websites in the world.

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.

the official site for postgresql, the world's most advanced open source database

osgeo, the opensource for geospatial fosters global adoption of open geospatial technology by being an inclusive software foundation.