direnv

Dev Containers

devcontainers/cli

Popular

Open spec (devcontainer.json) for container-based dev environments used by VS Code, Codespaces and more.

GitHub Codespaces

github.com

Cloud-hosted dev environments spun up from a repo's devcontainer config, accessible in browser or VS Code.

nvm

nvm-sh/nvm

Popular

POSIX shell script for installing and switching Node.js versions; the most widely used Node manager.

pyenv

pyenv/pyenv

Popular

Simple Python version management via shims; uv's built-in Python installs now cover many cases.

mise

jdx/mise

Trending

Polyglot tool-version manager, env loader and task runner; a fast asdf replacement in Rust.

Nix

NixOS/nix

Rising

Purely functional package manager and build system for reproducible environments; powers NixOS.

asdf

asdf-vm/asdf

Plugin-based multi-language version manager, rewritten in Go in v0.16.

fnm

Schniz/fnm

Fast, cross-platform Node.js version manager written in Rust with .nvmrc support.

Coder

coder/coder

Self-hosted cloud development environments defined in Terraform; also hosts AI coding agents.