We empower your workflow. Founded by Koichiro Sumi in 2012 and based in Tokyo, We have made a genuine commitment to help you boost your development flow with code review. We offer you Sider: a service that allows you to improve overall efficiency in product development.

However we are not resting on our laurels. Our team at Sider is continuously working on enhancements to the service to help developers all over the world.

GitHub Organizations

Over 10K GitHub organizations use Sider


Sider is used by developers in over 80 countries


Sider reviews over 17K repositories

We're hiring!

Are you interested in working for Sider? We are always looking for talented individuals that share our passion and can help us grow. Stop by our office, meet us for an informal lunch or dinner, or give us a skype call!

Please click here for more details.