Start building on Google Cloud with $300 in free credits. No commitment, no credit card required until you're ready to scale.
Launch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
Start Free Trial
MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.
MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
The OpenPC^2 project aims to develop a free, easy-to-use,
and flexible programming contest control system.
Our goal is to provide an open-source implementation of PC^2
and help people to hold programming contests like ACM/ICPC.
The Automated Contest Management System is designed to help manage programming contests in the style of the ACM-ICPC. It is a Ruby-on-Rails application that can be easily installed and managed.