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.

gimp - the gnu image manipulation program: the free and open source image editor

the official home page of the apache openoffice open source project, home of openoffice writer, calc, impress, draw and base.

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

use imagemagick® to create, edit, compose, and convert digital images. resize an image, crop it, change its shades and colors, add captions, and more.

since 1983, developing the free unix style operating system gnu, so that computer users can have the freedom to share and improve the software they use.