It&#x27;s got an elegant syntax, great for meta-programming (tends to be useful in large and&#x2F;or complex applications), strong community (there are gems for almost everything, i.e. no need to reinvent the wheel over and over again).<p>It&#x27;s used by some interesting applications, such as Github, Shopify, Heroku, Square, Zendesk and AirBnB.