Dev Environments

Runtime / version managers

• ★ mise (formerly rtx) — single tool for Node, Python, Ruby, Go, Bun, Deno, Java, Rust toolchains. The default in 2026.
• ★ fnm — fast Node version manager; great if you only need Node.
• Volta — fast Node manager with package.json-pinned versions.
• nvm — bash-based Node manager; long-running classic; slower than fnm.
• asdf — predecessor to mise; still works.
• Bun's bun upgrade — Bun manages its own version.
• Deno's deno upgrade — same.

Project-level reproducibility

• ★ mise.toml / .tool-versions — pin runtime versions per repo.
• engines in package.json — pin Node version for npm / pnpm / yarn warnings.
• packageManager field — pin pnpm/yarn/bun version (Corepack picks it up).
• .nvmrc — older approach; mise / fnm / volta read it.

Reproducible all-the-way-down

• ★ Devbox — Nix-based, zero-Nix-knowledge dev environments; declarative devbox.json. The default for "I want a single config that gives every dev the same Postgres / Redis / Node / etc."
• Devenv — also Nix-based; richer language for declaring services.
• Nix flakes — pure Nix; most powerful, steepest curve.
• direnv + mise — auto-load env when you cd.
• dotenv / dotenvx — .env files; see Secrets Management.

Containers / Docker

• ★ Docker + Docker Compose — the default for "stand up Postgres + Redis + your app for dev."
• ★ OrbStack — fastest Docker for Mac; lighter than Docker Desktop.
• Colima — open-source Docker Desktop alternative on Mac.
• Podman — daemonless Docker alternative; rootless.
• Lima — Linux VM on Mac for containers.

Devcontainers / cloud dev environments

• ★ Dev Containers spec — open standard; works in VS Code, JetBrains, GitHub Codespaces, GitPod.
• ★ GitHub Codespaces — hosted dev environment; generous free tier per month.
• GitPod — competitor; free tier.
• Coder — self-hosted Codespaces.
• Daytona — open-source dev environment manager.
• Replit — full hosted dev environment + deploy; free tier.

Hot-reload / process management for local dev

• Tilt — for multi-service / Kubernetes-like local dev; live reload.
• Skaffold — Google's k8s dev loop.
• @parcel/watcher, chokidar — file watching primitives.
• concurrently / pnpm run -r — run multiple scripts in parallel.
• foreman / overmind / hivemind — Procfile runners.

Editor-side defaults

• .editorconfig — universal indent / line-endings / final-newline rules.
• VS Code workspace settings — .vscode/settings.json, .vscode/extensions.json.
• zed.json — Zed equivalents.

Pick this if…

• Just need Node version per repo: mise (multi-language) or fnm (Node-only).
• Reproducible toolchain + services: Devbox or Devenv.
• Standardize across team via VS Code / GitHub: Dev Containers + Codespaces.
• Daily container dev on Mac: OrbStack.
• Postgres / Redis / etc for dev: Docker Compose (boring, works).
• Run multiple npm scripts in parallel: concurrently or pnpm run -r.