fnm vs goenv

fnm is a free Node.js version manager built in Rust for developers working from a command line or shell. It runs on macOS, Windows, and Linux, and is distributed as a single file through installation scripts, package managers, Cargo, or release binaries. It reads `.node-version` and `.nvmrc` files, so projects can specify a Node.js version. Shell setup can also enable automatic version switching when changing directories. The project provides setup instructions for Bash, Zsh, Fish, PowerShell, Windows Command Prompt, and Cmder. Its binary includes completions for Bash, Zsh, Fish, and PowerShell. On macOS and Linux, the installation script requires `curl` and `unzip`. The repository identifies the license as GPL-3.0 and invites pull requests, with issues available for project interaction. No paid plans are listed. The project page reports no published security advisories, while also noting that it has not set up a SECURITY.md file.

goenv manages Go versions on Linux and macOS using a model similar to pyenv and rbenv. It supports global selections, per-project versions, and environment-variable overrides. Shim executables placed in PATH route Go commands to the selected installation, enabling automatic switching and project version pinning. The installation guide says goenv downloads prebuilt Go binaries provided by Google, while new Go versions are added automatically on a daily cron schedule. The project identifies v3 as its current stable version and recommends it for new installations; it says v3 is fully backward compatible with v2. Version 2 receives security patches and critical bug fixes, with support ending on or before December 31, 2028. Setup documentation covers Bash and Zsh, including a .bashrc note for Ubuntu. Installation options include Homebrew and ZPlug for Zsh, and the README includes AWS CodeBuild guidance. goenv is free under the MIT license.