The Ruby Toolbox - Know your options!

sstephenson/rbenv

8.88
Groom your app’s Ruby environment
 Popularity
Stars
10,180
Forks
937
Watchers
300

rvm/rvm

4.95
Ruby enVironment Manager (RVM)
 Popularity
Stars
3,848
Forks
886
Watchers
155

sstephenson/ruby-build

3.38
Compile and install Ruby
 Popularity
Stars
2,828
Forks
567
Watchers
114

postmodern/chruby

1.77
Changes the current Ruby
 Popularity
Stars
2,108
Forks
170
Watchers
55

postmodern/ruby-install

1.31
Installs Ruby, JRuby, Rubinius, MagLev or MRuby
 Popularity
Stars
1,239
Forks
192
Watchers
45

vertiginous/pik

0.86
Ruby version manager for Windows
 Popularity
Stars
821
Forks
125
Watchers
53

senny/rvm.el

0.25
use rvm to manage ruby versions within emacs
 Popularity
Stars
208
Forks
42
Watchers
7

hmans/rbfu

0.1
Minimal Ruby version management is minimal.
 Popularity
Stars
123
Forks
9
Watchers
3

phoet/which_ruby

0.0
helper for checking the current ruby runtime/engine/version
 Popularity
Stars
2
Forks
0
Watchers
1