gem list --local

No, I don’t actively use all of these. I use a lot of ’em, though. DataMapper and Merb are two that I have yet to dig into.

$ gem list —local

• LOCAL GEMS *

abstract (1.0.0)
actionmailer (2.3.2, 2.2.2, 1.3.3)
actionpack (2.3.2, 2.2.2, 1.13.3)
actionwebservice (1.2.6, 1.2.3)
activerecord (2.3.2, 2.2.2, 1.15.3)
activeresource (2.3.2, 2.2.2)
activesupport (2.3.2, 2.2.2, 1.4.2)
addressable (2.0.2)
AdoccaMemcache (0.1.12)
aslakhellesoy-cucumber (0.1.99.21)
authlogic (2.0.11, 2.0.9)
bcrypt-ruby (2.0.3)
bmabey-email_spec (0.1.3)
builder (2.1.2)
capistrano (2.5.4)
carlosbrando-remarkable (2.3.1)
cgi_multipart_eof_fix (2.5.0)
cheat (1.2.1)
chriseppstein-compass (0.4.2)
chronic (0.2.3)
columnize (0.3.0)
commonwatir (1.6.2)
cucumber (0.3.0)
curb (0.1.4)
daemons (1.0.10)
data_objects (0.9.11)
deprec (2.0.0)
diff-lcs (1.1.2)
dm-aggregates (0.9.10)
dm-core (0.9.10)
dm-migrations (0.9.10)
dm-serializer (0.9.10)
dm-sweatshop (0.9.10)
dm-timestamps (0.9.10)
dm-types (0.9.10)
dm-validations (0.9.10)
do_sqlite3 (0.9.11)
echoe (3.1)
erubis (2.6.3)
extlib (0.9.10)
faker (0.3.1)
fastercsv (1.4.0)
fastthread (1.0.1)
feed-normalizer (1.5.1)
firewatir (1.6.2)
gem_plugin (0.2.3)
growl-glue (1.0.7)
haml (2.1.0, 2.0.9)
highline (1.5.0)
hoe (1.8.3)
hpricot (0.6.164)
json (1.1.3)
json_pure (1.1.3)
justinfrench-formtastic (0.1.7)
libxml-ruby (0.9.8)
libxml-xmlrpc (0.1.5)
linecache (0.43)
mailfactory (1.4.0)
map_by_method (0.8.3)
mbleigh-subdomain-fu (0.0.5)
mechanize (0.9.0)
merb (1.0.9)
merb-action-args (1.0.9)
merb-assets (1.0.9)
merb-auth (1.0.9)
merb-auth-core (1.0.9)
merb-auth-more (1.0.9)
merb-auth-slice-password (1.0.9)
merb-cache (1.0.9)
merb-core (1.0.9)
merb-exceptions (1.0.9)
merb-gen (1.0.9)
merb-haml (1.0.9)
merb-helpers (1.0.9)
merb-mailer (1.0.9)
merb-more (1.0.9)
merb-param-protection (1.0.9)
merb-slices (1.0.9)
merb_datamapper (1.0.9)
mime-types (1.15)
mini_magick (1.2.3)
mislav-hanna (0.1.7)
mislav-will_paginate (2.3.7)
mocha (0.9.5)
money (2.1.3)
mongrel (1.1.5)
mongrel_cluster (1.0.5)
mysql (2.7)
needle (1.3.0)
net-scp (1.0.2)
net-sftp (2.0.2)
net-ssh (2.0.11, 2.0.10)
net-ssh-gateway (1.0.1)
newgem (1.2.3)
nifty-generators (0.2.4)
nokogiri (1.2.3, 1.1.1)
notahat-machinist (0.3.1)
open4 (0.9.6)
packet (0.1.14)
paperclip (2.1.2)
ParseTree (3.0.3)
passenger (2.0.6)
polyglot (0.2.5, 0.2.4)
rack (0.9.1)
radiant (0.7.1)
railroad (0.5.0)
rails (2.3.2, 2.2.2, 1.2.3)
rake (0.8.4, 0.8.3)
randexp (0.1.4)
rb-appscript (0.5.1)
rcov (0.8.1.2.0)
rdiscount (1.3.4)
rdoc (2.3.0)
RedCloth (4.1.1)
remarkable (3.0.10)
remarkable_activerecord (3.0.10)
rspec (1.2.4, 1.1.99.10)
rspec-rails (1.2.4, 1.1.99.10)
rubigen (1.5.2)
ruby-debug (0.10.3)
ruby-debug-base (0.10.3)
ruby-debug-ide (0.4.4)
ruby-json (1.1.2)
ruby-openid (2.1.4)
ruby2ruby (1.2.2)
rubyforge (1.0.3, 1.0.2)
rubygems-update (1.3.1)
RubyInline (3.8.1)
rubyist-aasm (2.0.5)
s4t-utils (1.0.4)
safariwatir (0.3.3)
scaffolding_extensions (1.3.4)
schacon-git (1.0.7)
scrubyt (0.4.06)
selenium-client (1.2.15)
sevenwire-forgery (0.2.2)
sexp_processor (3.0.1)
simple-rss (1.2)
sinatra (0.9.0.4)
sources (0.0.1)
spicycode-rcov (0.8.2.1)
sqlite3-ruby (1.2.4)
syntax (1.0.0)
templater (0.5.0)
term-ansicolor (1.0.3)
thor (0.9.9)
thoughtbot-clearance (0.5.2)
thoughtbot-factory_girl (1.2.1, 1.2.0)
thoughtbot-shoulda (2.9.1)
treetop (1.2.5, 1.2.4)
user-choices (1.1.6)
webrat (0.4.4, 0.4.1)
what_methods (1.0.1)
wirble (0.1.2)
xml-simple (1.0.11)
ZenTest (4.0.0, 3.11.1)