Flynn vs tsuru: What are the differences?

What is Flynn? Next generation open source platform as a service. Flynn lets you deploy apps with git push and containers. Developers can deploy any app to any cluster in seconds.

What is tsuru? Extensible and open source Platform as a Service software. tsuru is an open source polyglot cloud application platform (PaaS). With tsuru, you don’t need to think about servers at all. You can write apps in the programming language of your choice, back it with add-on resources such as SQL and NoSQL databases, memcached, redis, and many others. You manage your app using the tsuru command-line tool and you deploy code using the Git revision control system, all running on the tsuru infrastructure.

Flynn and tsuru belong to "Platform as a Service" category of the tech stack.

Some of the features offered by Flynn are:

• Flynn goes beyond 12 factor apps. Run any Linux process written in any language or framework, even stateful apps on your own servers or any public cloud.
• Scaling or adding a new cluster is simple: just add more nodes. Everything is containerized, Flynn takes care of distributing work across the cluster.
• Flynn is 100% free and open source. Flynn works great out of the box, and since Flynn is modular and API-driven it's easy to modify and swap components to suit your needs.

On the other hand, tsuru provides the following key features:

• Fast and secure. The entire process is really simple with no special tools needed, just a simple git push.
• Scaling in Tsuru is completely painless. Just add a unit and Tsuru will take care of everything else.
• Tsuru is built to be extensible. Through services you can provide anything your application needs.

"Free" is the primary reason why developers consider Flynn over the competitors, whereas "Very receptive to contributions" was stated as the key factor in picking tsuru.

Flynn and tsuru are both open source tools. Flynn with 7.21K GitHub stars and 531 forks on GitHub appears to be more popular than tsuru with 3.13K GitHub stars and 421 GitHub forks.