JAlgoArena is a programming contest platform which is actually a great alternative to commercial online portals - you have full control over hosting and running it and it's all for free!
Highly Available storage
JAlgoArena is using Apache Kafka and CockroachDB for highly available and cloud friendly persistent data store.
Java code editor
You will find embedded java code editor with code highlighting on board.
Minimalism
We strongly believe in minimalism as a general concept as well as a practical approach to everyday life.
Developer friendly
Every element in JAlgoArena is created by developers for developers - you will quickly get how to use it.
Cross-browser
JAlgoArena works in all modern browsers, both desktop and mobile, including latest Chrome, Firefox, Safari, Opera, IE and Edge.
License
Kube licensed under Apache 2.0.
JAlgoArena is absolutely free for personal or commercial use.