asdf is a CLI tool that can manage multiple language runtime versions on a per-project basis. It is like `gvm`, `nvm`, `rbenv`&`pyenv` (and more) all in one! Simply install your language's plugin!
See [CONTRIBUTING.md in the repo](https://github.com/asdf-vm/asdf/blob/master/CONTRIBUTING.md) or the [Contributing section on the docs site](http://asdf-vm.com/contribute/core.html#initial-setup).
- [ GitHub Issues](https://github.com/asdf-vm/asdf/issues): report a bug or raise a feature request to the `asdf` core team
- [ StackOverflow Tag](https://stackoverflow.com/questions/tagged/asdf-vm): see existing Q&A for `asdf`. Some of the core team watch this tag in addition to our helpful community
> Once upon a time there was a programming language<br/>
> There were many versions of it<br/>
> So people wrote a version manager for it<br/>
> To switch between versions for projects<br/>
> Different, old, new.
> Then there came more programming languages<br/>
> So there came more version managers<br/>
> And many commands for them
> I installed a lot of them<br/>
> I learnt a lot of commands
> Then I said, just one more version manager<br/>
> Which I will write instead
> So, there came another version manager<br/>
> **asdf version manager** - <https://github.com/asdf-vm/asdf>
> A version manager so extendable<br/>
> for which anyone can create a plugin<br/>
> To support their favourite language<br/>
> No more installing more version managers<br/>
> Or learning more commands
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This was the mail I wrote to a few friends to tell them about the project. Thanks to <ahref="https://twitter.com/roshanvid"target="_blank"rel="noreferrer">@roshanvid</a> for suggesting that this go into the readme
