diff --git a/Gemfile b/Gemfile
index 7a09b87..1b51e84 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,10 +1,9 @@
 source 'https://rubygems.org'
 
-gem 'puma'
+gem 'sequel'
+gem 'do_postgres'
 gem 'zero', :git => 'https://github.com/libzero/zero.git'
 gem 'slim'
 gem 'sass'
-gem 'compass'
-gem 'kramdown'
-gem 'sequel'
-gem 'do_postgres'
+gem 'puma'
+gem 'rubysl', :platforms => :rbx
diff --git a/Gemfile.lock b/Gemfile.lock
index d87b015..4a4b501 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/libzero/zero.git
-  revision: d92dea46954b388ec13bc53c6e4f9894f25863c4
+  revision: 3e0a3f20a79330f1f152a5f3667b29cb904d959c
   specs:
     zero (0.2.0)
       tilt
@@ -8,37 +8,245 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.2.6)
-    chunky_png (1.2.8)
-    compass (0.12.2)
-      chunky_png (~> 1.2)
-      fssm (>= 0.2.7)
-      sass (~> 3.1)
-    data_objects (0.10.6)
+    addressable (2.3.5)
+    data_objects (0.10.13)
       addressable (~> 2.1)
-    do_postgres (0.10.6)
-      data_objects (= 0.10.6)
-    fssm (0.2.10)
-    kramdown (1.1.0)
-    puma (2.4.0)
+    do_postgres (0.10.13)
+      data_objects (= 0.10.13)
+    ffi2-generators (0.1.1)
+    minitest (4.7.5)
+    psych (2.0.1)
+    puma (2.6.0)
       rack (>= 1.1, < 2.0)
+    racc (1.4.10)
     rack (1.5.2)
-    sass (3.2.10)
-    sequel (4.1.1)
+    rubysl (2.0.10)
+      psych (~> 2.0)
+      racc (~> 1.4)
+      rubysl-abbrev (~> 2.0)
+      rubysl-base64 (~> 2.0)
+      rubysl-benchmark (~> 2.0)
+      rubysl-bigdecimal (~> 2.0)
+      rubysl-cgi (~> 2.0)
+      rubysl-cgi-session (~> 2.0)
+      rubysl-cmath (~> 2.0)
+      rubysl-complex (~> 2.0)
+      rubysl-continuation (~> 2.0)
+      rubysl-coverage (~> 2.0)
+      rubysl-csv (~> 2.0)
+      rubysl-curses (~> 2.0)
+      rubysl-date (~> 2.0)
+      rubysl-delegate (~> 2.0)
+      rubysl-digest (~> 2.0)
+      rubysl-drb (~> 2.0)
+      rubysl-e2mmap (~> 2.0)
+      rubysl-english (~> 2.0)
+      rubysl-enumerator (~> 2.0)
+      rubysl-erb (~> 2.0)
+      rubysl-etc (~> 2.0)
+      rubysl-expect (~> 2.0)
+      rubysl-fcntl (~> 2.0)
+      rubysl-fiber (~> 2.0)
+      rubysl-fileutils (~> 2.0)
+      rubysl-find (~> 2.0)
+      rubysl-forwardable (~> 2.0)
+      rubysl-getoptlong (~> 2.0)
+      rubysl-gserver (~> 2.0)
+      rubysl-io-console (~> 2.0)
+      rubysl-io-nonblock (~> 2.0)
+      rubysl-io-wait (~> 2.0)
+      rubysl-ipaddr (~> 2.0)
+      rubysl-irb (~> 2.0)
+      rubysl-json (~> 2.0)
+      rubysl-logger (~> 2.0)
+      rubysl-mathn (~> 2.0)
+      rubysl-matrix (~> 2.0)
+      rubysl-mkmf (~> 2.0)
+      rubysl-monitor (~> 2.0)
+      rubysl-mutex_m (~> 2.0)
+      rubysl-net-ftp (~> 2.0)
+      rubysl-net-http (~> 2.0)
+      rubysl-net-imap (~> 2.0)
+      rubysl-net-pop (~> 2.0)
+      rubysl-net-protocol (~> 2.0)
+      rubysl-net-smtp (~> 2.0)
+      rubysl-net-telnet (~> 2.0)
+      rubysl-nkf (~> 2.0)
+      rubysl-observer (~> 2.0)
+      rubysl-open-uri (~> 2.0)
+      rubysl-open3 (~> 2.0)
+      rubysl-openssl (~> 2.0)
+      rubysl-optparse (~> 2.0)
+      rubysl-ostruct (~> 2.0)
+      rubysl-pathname (~> 2.0)
+      rubysl-prettyprint (~> 2.0)
+      rubysl-prime (~> 2.0)
+      rubysl-profile (~> 2.0)
+      rubysl-profiler (~> 2.0)
+      rubysl-pstore (~> 2.0)
+      rubysl-pty (~> 2.0)
+      rubysl-rational (~> 2.0)
+      rubysl-readline (~> 2.0)
+      rubysl-resolv (~> 2.0)
+      rubysl-rexml (~> 2.0)
+      rubysl-rinda (~> 2.0)
+      rubysl-ripper (~> 2.0)
+      rubysl-rss (~> 2.0)
+      rubysl-scanf (~> 2.0)
+      rubysl-securerandom (~> 2.0)
+      rubysl-set (~> 2.0)
+      rubysl-shellwords (~> 2.0)
+      rubysl-singleton (~> 2.0)
+      rubysl-socket (~> 2.0)
+      rubysl-stringio (~> 2.0)
+      rubysl-strscan (~> 2.0)
+      rubysl-syslog (~> 2.0)
+      rubysl-tempfile (~> 2.0)
+      rubysl-test-unit (~> 2.0)
+      rubysl-thread (~> 2.0)
+      rubysl-thwait (~> 2.0)
+      rubysl-time (~> 2.0)
+      rubysl-timeout (~> 2.0)
+      rubysl-tmpdir (~> 2.0)
+      rubysl-tracer (~> 2.0)
+      rubysl-tsort (~> 2.0)
+      rubysl-un (~> 2.0)
+      rubysl-uri (~> 2.0)
+      rubysl-weakref (~> 2.0)
+      rubysl-webrick (~> 2.0)
+      rubysl-xmlrpc (~> 2.0)
+      rubysl-yaml (~> 2.0)
+      rubysl-zlib (~> 2.0)
+    rubysl-abbrev (2.0.2)
+    rubysl-base64 (2.0.0)
+    rubysl-benchmark (2.0.0)
+    rubysl-bigdecimal (2.0.2)
+    rubysl-cgi (2.0.0)
+    rubysl-cgi-session (2.0.0)
+    rubysl-cmath (2.0.0)
+    rubysl-complex (2.0.0)
+    rubysl-continuation (2.0.0)
+    rubysl-coverage (2.0.3)
+    rubysl-csv (2.0.1)
+      rubysl-english (~> 2.0)
+    rubysl-curses (2.0.0)
+    rubysl-date (2.0.5)
+    rubysl-delegate (2.0.0)
+    rubysl-digest (2.0.2)
+    rubysl-drb (2.0.1)
+    rubysl-e2mmap (2.0.0)
+    rubysl-english (2.0.0)
+    rubysl-enumerator (2.0.0)
+    rubysl-erb (2.0.0)
+    rubysl-etc (2.0.3)
+      ffi2-generators (~> 0.1)
+    rubysl-expect (2.0.0)
+    rubysl-fcntl (2.0.4)
+      ffi2-generators (~> 0.1)
+    rubysl-fiber (2.0.0)
+    rubysl-fileutils (2.0.2)
+    rubysl-find (2.0.0)
+    rubysl-forwardable (2.0.0)
+    rubysl-getoptlong (2.0.0)
+    rubysl-gserver (2.0.0)
+      rubysl-socket (~> 2.0)
+      rubysl-thread (~> 2.0)
+    rubysl-io-console (2.0.0)
+    rubysl-io-nonblock (2.0.0)
+    rubysl-io-wait (2.0.0)
+    rubysl-ipaddr (2.0.0)
+    rubysl-irb (2.0.3)
+      rubysl-e2mmap (~> 2.0)
+      rubysl-mathn (~> 2.0)
+      rubysl-readline (~> 2.0)
+      rubysl-thread (~> 2.0)
+      rubysl-tracer (~> 2.0)
+    rubysl-json (2.0.2)
+    rubysl-logger (2.0.0)
+    rubysl-mathn (2.0.0)
+    rubysl-matrix (2.1.0)
+      rubysl-e2mmap (~> 2.0)
+    rubysl-mkmf (2.0.1)
+      rubysl-fileutils (~> 2.0)
+      rubysl-shellwords (~> 2.0)
+    rubysl-monitor (2.0.0)
+    rubysl-mutex_m (2.0.0)
+    rubysl-net-ftp (2.0.1)
+    rubysl-net-http (2.0.4)
+      rubysl-cgi (~> 2.0)
+      rubysl-erb (~> 2.0)
+      rubysl-singleton (~> 2.0)
+    rubysl-net-imap (2.0.1)
+    rubysl-net-pop (2.0.1)
+    rubysl-net-protocol (2.0.1)
+    rubysl-net-smtp (2.0.1)
+    rubysl-net-telnet (2.0.0)
+    rubysl-nkf (2.0.1)
+    rubysl-observer (2.0.0)
+    rubysl-open-uri (2.0.0)
+    rubysl-open3 (2.0.0)
+    rubysl-openssl (2.0.0)
+    rubysl-optparse (2.0.1)
+      rubysl-shellwords (~> 2.0)
+    rubysl-ostruct (2.0.4)
+    rubysl-pathname (2.0.0)
+    rubysl-prettyprint (2.0.1)
+    rubysl-prime (2.0.0)
+    rubysl-profile (2.0.0)
+    rubysl-profiler (2.0.1)
+    rubysl-pstore (2.0.0)
+    rubysl-pty (2.0.2)
+    rubysl-rational (2.0.1)
+    rubysl-readline (2.0.2)
+    rubysl-resolv (2.0.0)
+    rubysl-rexml (2.0.1)
+    rubysl-rinda (2.0.0)
+    rubysl-ripper (2.0.0)
+    rubysl-rss (2.0.0)
+    rubysl-scanf (2.0.0)
+    rubysl-securerandom (2.0.0)
+    rubysl-set (2.0.1)
+    rubysl-shellwords (2.0.0)
+    rubysl-singleton (2.0.0)
+    rubysl-socket (2.0.1)
+    rubysl-stringio (2.0.0)
+    rubysl-strscan (2.0.0)
+    rubysl-syslog (2.0.1)
+      ffi2-generators (~> 0.1)
+    rubysl-tempfile (2.0.0)
+    rubysl-test-unit (2.0.1)
+      minitest (~> 4.7)
+    rubysl-thread (2.0.2)
+    rubysl-thwait (2.0.0)
+    rubysl-time (2.0.3)
+    rubysl-timeout (2.0.0)
+    rubysl-tmpdir (2.0.0)
+    rubysl-tracer (2.0.0)
+    rubysl-tsort (2.0.1)
+    rubysl-un (2.0.0)
+      rubysl-fileutils (~> 2.0)
+      rubysl-optparse (~> 2.0)
+    rubysl-uri (2.0.0)
+    rubysl-weakref (2.0.0)
+    rubysl-webrick (2.0.0)
+    rubysl-xmlrpc (2.0.0)
+    rubysl-yaml (2.0.0)
+    rubysl-zlib (2.0.0)
+    sass (3.2.12)
+    sequel (4.3.0)
     slim (2.0.1)
       temple (~> 0.6.6)
       tilt (>= 1.3.3, < 2.1)
-    temple (0.6.6)
+    temple (0.6.7)
     tilt (1.4.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  compass
   do_postgres
-  kramdown
   puma
+  rubysl
   sass
   sequel
   slim
diff --git a/config.ru b/config.ru
new file mode 100644
index 0000000..e051366
--- /dev/null
+++ b/config.ru
@@ -0,0 +1,5 @@
+#!/usr/bin/env rackup
+require File.expand_path('../lib/boot.rb', __FILE__)
+
+Renderer.find_templates('templates')
+run Application.new(Router, {:renderer => Renderer})
diff --git a/controller/method_not_allowed.rb b/controller/method_not_allowed.rb
new file mode 100644
index 0000000..1511646
--- /dev/null
+++ b/controller/method_not_allowed.rb
@@ -0,0 +1,10 @@
+module Routes
+  class MethodNotAllowed
+    def self.call(session)
+      session.response.status = 405
+      session.response.content_type = 'text/html'
+      session.response.body = 'Method not supported by this resource!'
+      nil
+    end
+  end
+end
diff --git a/controller/route_not_found.rb b/controller/route_not_found.rb
new file mode 100644
index 0000000..40ad663
--- /dev/null
+++ b/controller/route_not_found.rb
@@ -0,0 +1,10 @@
+module Routes
+  class RouteNotFound
+    def self.call(session)
+      session.response.status = 404
+      session.response.content_type = 'text/html'
+      session.response.body = 'This page does not exist!'
+      nil
+    end
+  end
+end
diff --git a/controller/welcome.rb b/controller/welcome.rb
new file mode 100644
index 0000000..c6bcf30
--- /dev/null
+++ b/controller/welcome.rb
@@ -0,0 +1,7 @@
+module Routes
+  class Welcome < Controller
+    def self.get(session)
+      session.options[:render] = 'posts/index'
+    end
+  end
+end
diff --git a/lib/application.rb b/lib/application.rb
new file mode 100644
index 0000000..e5972c4
--- /dev/null
+++ b/lib/application.rb
@@ -0,0 +1,19 @@
+class Application
+  def initialize(start, defaults = {})
+    @start = start
+    @defaults = defaults
+  end
+
+  def call(env)
+    session = Session.new(
+      ::Zero::Request.new(env),
+      ::Zero::Response.new,
+      @defaults.clone
+    )
+    worker = @start
+    while not worker.nil?
+      worker = worker.call(session)
+    end
+    session.response.to_a
+  end
+end
diff --git a/lib/boot.rb b/lib/boot.rb
new file mode 100644
index 0000000..1b46f4f
--- /dev/null
+++ b/lib/boot.rb
@@ -0,0 +1,12 @@
+$LOAD_PATH << File.expand_path('..', __FILE__)
+
+require 'libraries'
+require 'session'
+require 'application'
+require 'controller'
+require 'renderer'
+require 'router'
+
+Dir[File.expand_path('../../controller', __FILE__) + '/**'].each do |controller|
+  require controller
+end
diff --git a/lib/controller.rb b/lib/controller.rb
new file mode 100644
index 0000000..9d742b0
--- /dev/null
+++ b/lib/controller.rb
@@ -0,0 +1,11 @@
+class Controller
+  def self.call(session)
+    return call_method(session) if respond_to? session.request.method
+    Routes::MethodNotAllowed.call(session)
+  end
+
+  def self.call_method(session)
+    send(session.request.method, session)
+    session.options[:renderer]
+  end
+end
diff --git a/lib/libraries.rb b/lib/libraries.rb
new file mode 100644
index 0000000..692be34
--- /dev/null
+++ b/lib/libraries.rb
@@ -0,0 +1,5 @@
+require 'bundler/setup'
+require 'sequel'
+require 'zero'
+require 'sass'
+require 'slim'
diff --git a/lib/renderer.rb b/lib/renderer.rb
new file mode 100644
index 0000000..b817784
--- /dev/null
+++ b/lib/renderer.rb
@@ -0,0 +1,61 @@
+class Renderer
+  COMPONENT_MATCHER = %r{/?(?<template>[^\.]+)\.(?<type>[^\.]+)\.(?<engine>.+)}
+  DEFAULT_TYPE = :default_type
+
+  def self.call(session)
+    unless session.options.has_key? :render
+      session.response.body = ':render not set!'
+      return nil
+    end
+    to_render = session.options[:render]
+    unless templates.has_key? to_render
+      session.response.body = 'Template does not exist!'
+      return nil
+    end
+    template = templates[to_render]
+    type = get_preferred_type(session, template)
+    type = template.first[0] if type == DEFAULT_TYPE
+    puts template.inspect
+    session.response.body = Tilt.new(template[type]).render(session.options)
+    puts session.response.body
+    session.response.content_type = type
+    nil
+  end
+
+  # initialize the template cache
+  def self.find_templates(path)
+    @@templates = {}
+    Dir[path + '/**/*'].each do |file|
+      next unless File.file?(file)
+      parts = file.gsub(path, '').match(COMPONENT_MATCHER)
+      @@templates[parts[:template]] ||= {}
+      @@templates[parts[:template]].merge!({parts[:type].to_sym => file})
+    end
+  end
+
+  def self.templates
+    find_templates 'templates' unless @@templates
+    @@templates
+  end
+
+  def self.set_types(types)
+    @@types = types
+  end
+
+  def self.types
+    @@types ||= {
+      '*/*'                  => DEFAULT_TYPE,
+      'text/css'             => :css,
+      'text/html'            => :html,
+      'application/atom+xml' => :atom
+    }
+  end
+
+  def self.get_preferred_type(session, template)
+    session.request.accept.types.each do |type|
+      next unless types.has_key? type
+      return types[type] if template.has_key? types[type]
+      return DEFAULT_TYPE if types[type] == DEFAULT_TYPE
+    end
+  end
+end
diff --git a/lib/router.rb b/lib/router.rb
new file mode 100644
index 0000000..507ec16
--- /dev/null
+++ b/lib/router.rb
@@ -0,0 +1,37 @@
+class Router
+  ROUTE_REGEX = %r{\A(/(?<controller>[a-zA-Z]+)(/(?<id>[^/]+)?)?)?\Z}
+  # get the controller handling the request
+  def self.call(session)
+    variables = session.request.path.match(ROUTE_REGEX)
+    return default_route unless variables && variables[:controller]
+    session.options[:id] = variables[:id]
+    find variables[:controller]
+  end
+
+  # the namespace of all routes
+  def self.namespace
+    @@namespace ||= ::Routes
+  end
+
+  # set the namespace to a module or class which holds all controllers
+  def self.set_namespace(namespace)
+    @@namespace = namespace
+  end
+
+  # the default route to take when no path is given
+  def self.default_route
+    @@default ||= namespace.const_get(:Welcome)
+  end
+
+  # set the default route to take when no path is given
+  def self.set_default_route(default)
+    @@default = default
+  end
+
+  # check for the controller name and return 404 when not found
+  def self.find(ctrl)
+    ctrl = ctrl.capitalize
+    return namespace.const_get(ctrl) if namespace.const_defined?(ctrl)
+    namespace::RouteNotFound
+  end
+end
diff --git a/lib/session.rb b/lib/session.rb
new file mode 100644
index 0000000..cf9d14e
--- /dev/null
+++ b/lib/session.rb
@@ -0,0 +1 @@
+Session = Struct.new(:request, :response, :options)
diff --git a/templates/posts/index.atom.slim b/templates/posts/index.atom.slim
new file mode 100644
index 0000000..e69de29
diff --git a/templates/posts/index.html.slim b/templates/posts/index.html.slim
new file mode 100644
index 0000000..2c59bc2
--- /dev/null
+++ b/templates/posts/index.html.slim
@@ -0,0 +1,10 @@
+doctype html
+html
+  head
+    title zero-knowledge
+  body
+    header
+      h1 zero-knowledge
+      h2 noch ohne blub
+    #content
+      p This is from a slim Template!