RVM: Ruby Version Manager - RVM Ruby Version Manager
SDKMAN! the Software Development Kit Manager
SDKMAN! is a tool for managing parallel versions of multiple Software Development Kits on most Unix based systems.
dnvm - the dotnet version manager
Automated dependency updates with pull requests - Deps
Deps is a command line tool that can run locally and in CI, making dependency management easier.
Composer PHP
A Dependency Manager for PHP