Rails LTS – Long Term Support for Ruby on Rails 2.3, 3.2, 4.2, and 5.2

Vulnerabilities for Rails are disclosed multiple times a year. We maintain old versions of Rails that are no longer community supported to protect your application from security breaches. Having to rebuild your legacy code because your version of Rails has gone end-of-life? With Rails LTS you are free to upgrade whenever it fits your roadmap. Or stay on our secure, long-term-supported version of R

[tmatsuu]

Rails2.3系の長期サポートを提供するサービス。今もなおRails2.3系を利用しているのであれば、脆弱性対応が提供されてるこっちに乗り換えるべし。

[suginoy]

Rails 4リリース後にRails 2のサポートしてくれるらしい。