ROR has more than 1000s of gems which make the framework highly useful for developers. The ready to use gems means a lot when you hire ruby on rails application developer as it help them build complex applications. At GitHub, one can easily found and download gems when needed to build complex apps. If you are ruby on rails app development companies and using ROR for your project and somewhere you realized some features should be there as it does not currently have, you can contribute the feature on Github.
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