CodeIgniter vs Grails: What are the differences?
CodeIgniter: A Fully Baked PHP Framework. CodeIgniter is a proven, agile & open PHP web application framework with a small footprint. It is powering the next generation of web apps; Grails: An Open Source, full stack, web application framework for the JVM. Grails is a framework used to build web applications with the Groovy programming language. The core framework is very extensible and there are numerous plugins available that provide easy integration of add-on features.
CodeIgniter and Grails can be categorized as "Frameworks (Full Stack)" tools.
"Mvc" is the primary reason why developers consider CodeIgniter over the competitors, whereas "Groovy" was stated as the key factor in picking Grails.
CodeIgniter and Grails are both open source tools. It seems that CodeIgniter with 17.4K GitHub stars and 7.72K forks on GitHub has more adoption than Grails with 2.48K GitHub stars and 945 GitHub forks.
Buffer, Accenture, and Ola are some of the popular companies that use CodeIgniter, whereas Grails is used by LinkedIn, PedidosYa, and TransferWise. CodeIgniter has a broader approval, being mentioned in 261 company stacks & 105 developers stacks; compared to Grails, which is listed in 47 company stacks and 22 developer stacks.