🎉
One Tool
Manage each of your project runtimes with a single CLI tool and command interface.
| CARVIEW |
Select Language
HTTP/2 200
server: GitHub.com
content-type: text/html; charset=utf-8
last-modified: Thu, 04 Dec 2025 15:42:57 GMT
access-control-allow-origin: *
etag: W/"6931ac01-7d59"
expires: Sat, 27 Dec 2025 20:12:43 GMT
cache-control: max-age=600
content-encoding: gzip
x-proxy-cache: MISS
x-github-request-id: 6B87:3157C7:6F2B74:7C24C6:69503B62
accept-ranges: bytes
age: 0
date: Sat, 27 Dec 2025 20:39:39 GMT
via: 1.1 varnish
x-served-by: cache-bom-vanm7210054-BOM
x-cache: HIT
x-cache-hits: 0
x-timer: S1766867980.764020,VS0,VE198
vary: Accept-Encoding
x-fastly-request-id: 5e086ac86e505093fb5334c033117b4acaa2470a
content-length: 6746
asdf
Skip to content
asdfThe Multiple Runtime Version Manager
Manage all your runtime versions with one tool!
🔌
Plugins
Large ecosystem of existing runtimes & tools. Simple API to add support for new tools as you need!
⏮
Backwards Compatible
Support for existing config files .nvmrc, .node-version, .ruby-version for smooth migration!
📄
One Config File
.tool-versions to manage all your tools, runtimes and their versions in a single, sharable place.
🐚
Shells
Supports Bash, ZSH, Fish & Elvish with completions available.
🤖
GitHub Actions
Provides a GitHub Action to install and utilize your .tool-versions in your CI/CD workflows.