Ruby & Rails support in Leopard (with dtrace)…
includes the following gems:
- actionmailer (1.3.3)
- actionpack (1.13.3)
- actionwebservice (1.2.3)
- activerecord (1.15.3)
- activesupport (1.4.2)
- acts_as_ferret (0.4.1)
- capistrano (2.0.0)
- cgimultiparteof_fix (2.2)
- daemons (1.0.7)
- dnssd (0.6.0)
- fastthread (1.0)
- fcgi (0.8.7)
- ferret (0.11.4)
- gem_plugin (0.2.2)
- highline (1.2.9)
- hpricot (0.6)
- libxml-ruby (0.3.8.4)
- mongrel (1.0.1)
- needle (1.3.0)
- net-sftp (1.1.0)
- net-ssh (1.1.2)
- rails (1.2.3)
- rake (0.7.3)
- RedCloth (3.0.4)
- ruby-openid (1.1.4)
- ruby-yadis (0.3.4)
- rubynode (0.1.3)
- sources (0.0.1)
- sqlite3-ruby (1.2.1)
- termios (0.9.4)
(↝via rubyinside)

dtrace support thanks to our favorite corporate bloggers / tacos for the needy outreach volunteers at joyent.