Composer vs SDKMAN: What are the differences?
What is Composer? Dependency Manager for PHP. Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.
What is SDKMAN? A CLI Tool To Easily Manage Multiple Software Development Kits. It provides a convenient way to install, switch, list and remove candidates. Using it, you can now manage parallel versions of multiple SDKs easily on any Unix-like operating system.
Composer and SDKMAN belong to "Package Managers" category of the tech stack.
Composer is an open source tool with 20.8K GitHub stars and 5.6K GitHub forks. Here's a link to Composer's open source repository on GitHub.