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the eclipse foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

oracle offers a comprehensive and fully integrated stack of cloud applications and cloud platform services.

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.

neptune software and its leading sap-centric, low-code enterprise app development platform empowers it departments to drive business results.

in-depth, to-the-point tutorials on java, spring, spring boot, security, and rest.

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

atlassian's team collaboration software like jira, confluence and trello help teams organize, discuss, and complete shared work.

red hat is the world’s leading provider of enterprise open source solutions, including high-performing linux, cloud, container, and kubernetes technologies.