GVM vs SDKMAN!

GVM is a free tool for managing Go versions on Linux and macOS. It installs and removes versions by tag, including releases and the tip version; `gvm listall` shows available release tags and can include weekly builds. Install options allow a source or name to be selected, along with settings for protobufs, build tools, and whether binaries are preferred or required. The `gvm diff` command reports files added to or removed from GOROOT. GVM also manages GOPATH package sets, including sets kept local to a repository, and can link project directories into GOPATH. Package sets can use their own native code and dependencies through an overlay prefix and related environment variables. The project supports version pinning, lockfiles, automatic switching, shell integration, and CI/CD use. Installation requires Bison; platform instructions also list tools such as Git, Mercurial, Make, and GCC. Compiling Go 1.5 or later requires an existing Go installation for bootstrapping, with Go 1.4 offered as an example. The repository includes an MIT license.

SDKMAN! is a command-line interface and API for managing Software Development Kits in the JVM ecosystem. It supports languages and tools including Java, Scala, Kotlin, Groovy, Ant, Gradle, Grails, Maven, SBT, Spark, Spring Boot, and Vert.x. From the CLI, users can install, uninstall, list, inspect, switch, upgrade, and set default SDK versions. A project can record its versions in an .sdkmanrc file, with automatic switching available when entering its directory. Java distributions are obtained through the Foojay DISCO API. SDKMAN! works on macOS and Linux; Windows use requires WSL or MSYS with MinGW, since it does not run natively there. Cygwin is no longer supported. The installer requires curl, zip, and unzip, and works with Bash and ZSH. Its CI mode answers prompts, disables colored output, and turns off self-updates. SDKMAN! is free, open source, and Apache 2.0 licensed. Security updates are provided only for the latest released CLI version. The project says Go, Rust, Node.js, Python, and Ruby toolchains are outside its intended scope.