Ruby agent compatibility⚓ The Ruby agent is compatible with the the most popular web frameworks, operating systems and web servers. Below you can find more details about specific version compatibility. Operating systems⚓ The Sqreen Ruby agent is supported on all operating systems, including Linux and Mac OS X. Ruby versions⚓ The ruby agent is fully compatible and tested against all rubies starting from Ruby 1.9.3 up to 2.4.x. Rails and Sinatra⚓ The Ruby agent is fully compatible with all version of Ruby on Rails between 3 and 5 included. Sqreen provides the most complete protection to all your Rails applications. The Sqreen Ruby agent is fully compatible with Sinatra 1.4.x. Servers compatibility⚓ Sqreen is tested against the following servers: Puma Passenger Thin Unicorn WEBrick Puma may display the following message during your application startup: "Detected 1 Thread(s) started in app boot". Automatic User Context in Ruby⚓ Sqreen automatically detects and protects user accounts when your application is based on Devise framework, with DatabaseAuthenticatable strategy. More information in section Ruby SDK for user monitoring. Database compatibility (NoSQL/SQL injection protection)⚓ Sqreen protects against SQL and NoSQL injections for the most common production databases: MySQL PostgreSQL SQLite MongoDB Other database? Please, contact us if you are using a different database. We will adjust our roadmap! Templating engine compatibility (cross-site scripting protection)⚓ The protection against cross-site scripting attacks (XSS) is available for the ERB, Haml and Slim templating engine. Other templating engine? Please, contact us if you are using a different templating engine. We will adjust our roadmap!