diff --git a/Gemfile b/Gemfile
index 42cae2d..77d7481 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,7 @@
 source "http://rubygems.org"
 
-gem "boxen", "~> 0.1"
+gem "boxen", "~> 0.4"
+
+group :development do
+  gem "aws-sdk"
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index 179673a..d4c580a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,6 +3,11 @@ GEM
   specs:
     addressable (2.3.2)
     ansi (1.4.3)
+    aws-sdk (1.6.9)
+      httparty (~> 0.7)
+      json (~> 1.4)
+      nokogiri (>= 1.4.4)
+      uuidtools (~> 2.1)
     boxen (0.4.0)
       ansi (~> 1.4)
       hiera (~> 1.0.0)
@@ -19,13 +24,19 @@ GEM
     hashie (1.2.0)
     hiera (1.0.0)
     highline (1.6.15)
+    httparty (0.9.0)
+      multi_json (~> 1.0)
+      multi_xml
+    json (1.7.5)
     json_pure (1.7.5)
     librarian-puppet (0.9.6)
       json_pure
       puppet
       thor (~> 0.15)
     multi_json (1.3.6)
+    multi_xml (0.5.1)
     multipart-post (1.1.5)
+    nokogiri (1.5.5)
     octokit (1.15.1)
       addressable (~> 2.2)
       faraday (~> 0.8)
@@ -36,9 +47,11 @@ GEM
       facter (>= 1.6.11)
       hiera (>= 1.0.0rc)
     thor (0.16.0)
+    uuidtools (2.1.3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  boxen (~> 0.1)
+  aws-sdk
+  boxen (~> 0.4)
diff --git a/README.md b/README.md
index d3502e8..7491ee5 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ This repository template is just a basic example of _how_ to do things with them
 
 1. Install XCode Command Line Tools and/or full XCode.
 1. Create a new repository on GitHub as your user for your Boxen. (eg.
-`wfarr/my-boxen`). **Make sure it is a private repository!** for now
+`wfarr/my-boxen`). **Make sure it is a private repository!**
 1. Get running like so:
   ```
   mkdir -p ~/src/my-boxen
@@ -76,3 +76,8 @@ what-have-you for your organization.
 For organization projects (read: repositories that people will be working in), please see the documentation in the projects module template we provide.
 
 For per-user configuration that doesn't need to be applied globally to everyone, please see the documentation in the people module template we provide.
+
+## Binary packages
+
+We support binary packaging for everything in Homebrew, RBEnv, and NVM.
+See `config/boxen.rb` for the environment variables to define.
diff --git a/config/boxen.rb b/config/boxen.rb
index 59b3348..50fd07d 100644
--- a/config/boxen.rb
+++ b/config/boxen.rb
@@ -6,3 +6,8 @@
 
 # Change the repo boxen will use.
 # ENV['BOXEN_REPO_NAME'] = 'boxen/our-boxen'
+
+# Boxen binary packaging
+# ENV["BOXEN_S3_ACCESS_KEY"] = ''
+# ENV["BOXEN_S3_SECRET_KEY"] = ''
+# ENV["BOXEN_S3_BUCKET"] = ''
diff --git a/script/sync b/script/sync
new file mode 100755
index 0000000..4628117
--- /dev/null
+++ b/script/sync
@@ -0,0 +1,112 @@
+#!/usr/bin/ruby
+# Sync binary snapshots to S3.
+
+require "pathname"
+require "tempfile"
+
+# Put us where we belong, in the root dir of our boxen repo.
+
+Dir.chdir Pathname.new(__FILE__).realpath + "../.."
+
+# Make sure our local dependencies are up to date.
+
+abort "Sorry, can't bootstrap." unless system "script/bootstrap"
+
+# Set up our local configuration, deps, and load path.
+
+load "config/basic.rb"
+
+require "aws-sdk"
+require "boxen/config"
+
+access_key  = ENV["BOXEN_S3_ACCESS_KEY"]
+secret_key  = ENV["BOXEN_S3_SECRET_KEY"]
+bucket_name = ENV["BOXEN_S3_BUCKET"]
+
+unless access_key && secret_key && bucket_name
+  abort "Please set the BOXEN_S3_{ACCESS_KEY,SECRET_KEY,BUCKET} env vars."
+end
+
+s3 = AWS::S3.new :access_key_id => access_key, :secret_access_key => secret_key
+os = `sw_vers -productVersion`.strip.split(".")[0..1].join "."
+
+bucket = s3.buckets[bucket_name]
+config = Boxen::Config.load
+
+# Sync Homebrew packages.
+
+Dir.chdir "#{config.homedir}/homebrew/Cellar" do
+  Dir["*/*"].each do |dir|
+    name, version = File.split dir
+
+    file = "homebrew/#{os}/#{name}-#{version}.tar.bz2"
+    temp = Tempfile.new "homebrew"
+    obj  = bucket.objects[file]
+
+    next if obj.exists?
+
+    printf "Snapshotting #{name} #{version}... "
+    $stdout.flush
+
+    system "tar", "-cjf", temp.path, dir
+    puts "done."
+
+    printf "Shipping #{name} #{version} to S3... "
+    $stdout.flush
+
+    obj.write :acl => :public_read, :file => temp.path
+    puts "done."
+  end
+end
+
+# Sync rbenv rubies.
+
+Dir.chdir "#{config.homedir}/rbenv/versions" do
+  Dir["*"].each do |dir|
+    next if File.symlink? dir
+
+    version = File.basename dir
+    file    = "rbenv/#{os}/#{version}.tar.bz2"
+    temp    = Tempfile.new "rbenv"
+    obj     = bucket.objects[file]
+
+    next if obj.exists?
+
+    printf "Snapshotting ruby #{version}... "
+    $stdout.flush
+
+    system "tar -cjf #{temp.path} #{version}"
+    puts "done."
+
+    printf "Shipping ruby #{version} to S3... "
+    $stdout.flush
+
+    obj.write :acl => :public_read, :file => temp.path
+    puts "done."
+  end
+end
+
+# Sync NVM nodes.
+
+Dir.chdir "#{config.homedir}/nvm" do
+  Dir["v*"].each do |dir|
+    version = File.basename dir
+    file    = "nvm/#{os}/#{version}.tar.bz2"
+    temp    = Tempfile.new "nvm"
+    obj     = bucket.objects[file]
+
+    next if obj.exists?
+
+    printf "Snapshotting node.js #{version}... "
+    $stdout.flush
+
+    system "tar -cjf #{temp.path} #{version}"
+    puts "done."
+
+    printf "Shipping node.js #{version} to S3... "
+    $stdout.flush
+
+    obj.write :acl => :public_read, :file => temp.path
+    puts "done."
+  end
+end
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index 0000000..62f851d
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diff --git a/vendor/cache/json-1.7.5.gem b/vendor/cache/json-1.7.5.gem
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index 0000000..737f5c8
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diff --git a/vendor/cache/multi_xml-0.5.1.gem b/vendor/cache/multi_xml-0.5.1.gem
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diff --git a/vendor/cache/uuidtools-2.1.3.gem b/vendor/cache/uuidtools-2.1.3.gem
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