diff --git a/Gemfile b/Gemfile
index 85d6f9e3..8920ca45 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,4 +11,5 @@ gem 'sinatra_warden'
 group :development do
   gem 'pry'
   gem 'rubocop'
+  gem 'sinatra-contrib'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index b027091f..c48e255b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,6 +4,7 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     ast (2.3.0)
+    backports (3.8.0)
     coderay (1.1.2)
     colorator (1.1.0)
     email_address (0.1.3)
@@ -36,6 +37,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
     method_source (0.8.2)
+    multi_json (1.12.2)
     mustermann (1.0.1)
     netaddr (1.5.1)
     parallel (1.12.0)
@@ -80,6 +82,13 @@ GEM
       rack (~> 2.0)
       rack-protection (= 2.0.0)
       tilt (~> 2.0)
+    sinatra-contrib (2.0.0)
+      backports (>= 2.0)
+      multi_json
+      mustermann (~> 1.0)
+      rack-protection (= 2.0.0)
+      sinatra (= 2.0.0)
+      tilt (>= 1.3, < 3)
     sinatra_warden (0.3.2)
       sinatra (>= 1.0.0)
       warden (~> 1.0)
@@ -101,6 +110,7 @@ DEPENDENCIES
   rubocop
   sass
   sinatra
+  sinatra-contrib
   sinatra_warden
 
 BUNDLED WITH
diff --git a/README.md b/README.md
index 8a4ad284..15924d9c 100644
--- a/README.md
+++ b/README.md
@@ -25,3 +25,29 @@ archivo `Gemfile`.
 ```bash
 bundle install
 ```
+
+## Ideas
+
+Sutty actua como una granja de sitios Jekyll.  La idea principal es que
+una sola instancia de Sutty es capaz de gestionar muchos sitios Jekyll.
+
+### Sin base de datos
+
+Sutty es capaz de obtener toda la información necesaria a partir de la
+estructura de directorios.
+
+### Sin autenticación
+
+Al menos sin autenticación propia.  Sutty es capaz de funcionar con
+mecanismos de autenticación diversos.  Actualmente solo funciona con
+LDAP.  Podría ni tener autenticación!
+
+### Sin administradoras ni administradas
+
+No hay una cuenta de administración que decide a quién corresponde un
+sitio o quién puede escribir o no.  Las usuarias crean sus propios
+sitios e invitan a otras usuarias a co-gestionarlos.
+
+### Múltiples versiones de Jekyll
+
+Debe ser capaz de soportar diferentes versiones de Jekyll.
diff --git a/lib/jekyll.rb b/lib/jekyll.rb
new file mode 100644
index 00000000..98af36af
--- /dev/null
+++ b/lib/jekyll.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+require 'jekyll'
+
+# Monkeypatcheando Jekyll
+module Jekyll
+  # Métodos agregados o modificados a Site
+  class Site
+    # Obtener un nombre para el sitio
+    def name
+      @name ||= File.basename(dest)
+    end
+  end
+end
diff --git a/lib/sutty.rb b/lib/sutty.rb
index 4d5be5ab..64e3f3ba 100644
--- a/lib/sutty.rb
+++ b/lib/sutty.rb
@@ -1,11 +1,12 @@
 # frozen_string_literal: true
 
 require 'yaml'
-require_relative 'sutty/models/jekyll'
+require 'jekyll'
+require_relative 'jekyll'
+require_relative 'sutty/models/post'
 
 # Sutty
 module Sutty
-
   # La raíz
   def self.root
     @root ||= File.expand_path(File.join(File.dirname(__FILE__), '..'))
@@ -13,7 +14,7 @@ module Sutty
 
   # La configuración
   def self.settings
-    @settings ||= YAML.load(File.read(Sutty.config_file))
+    @settings ||= YAML.safe_load(File.read(Sutty.config_file))
   end
 
   def self.config_file
@@ -24,8 +25,37 @@ module Sutty
     @sites_dir ||= File.join(Sutty.root, Sutty.settings['sites_dir'])
   end
 
+  # Comprueba que el directorio parezca ser de jekyll
+  def self.jekyll?(dir)
+    File.directory?(dir) && File.exist?(File.join(dir, '_config.yml'))
+  end
+
   def self.sites
-    binding.pry
-    @sites ||= Jekyll.all
+    @sites ||= Dir.entries('_sites/').map do |j|
+      # no queremos . ni .. ni archivos ocultos
+      next if j.start_with? '.'
+
+      j = Sutty.path_from_name(j)
+      next unless Sutty.jekyll? j
+
+      Dir.chdir(j) do
+        config = ::Jekyll.configuration('source' => Dir.pwd)
+
+        # No necesitamos cargar plugins en este momento
+        %w[plugins gems].each do |unneeded|
+          config[unneeded] = [] if config.key? unneeded
+        end
+
+        ::Jekyll::Site.new(config)
+      end
+    end.compact
+  end
+
+  def self.find(name)
+    Sutty.sites.select { |s| s.name == name }.first
+  end
+
+  def self.path_from_name(name)
+    File.realpath(File.join(Sutty.sites_dir, name))
   end
 end
diff --git a/lib/sutty/app.rb b/lib/sutty/app.rb
index e8c0a590..345047af 100644
--- a/lib/sutty/app.rb
+++ b/lib/sutty/app.rb
@@ -2,8 +2,10 @@
 
 require 'rack-flash'
 require 'sinatra/base'
+require 'sinatra/reloader' if ENV['RACK_ENV'] == 'development'
 require 'sinatra_warden'
 require_relative 'login'
+require_relative 'site'
 require_relative '../sutty'
 
 module Sutty
@@ -11,12 +13,17 @@ module Sutty
   class App < Sinatra::Base
     use Rack::Flash
     use Sutty::Login
+    use Sutty::Site
     register Sinatra::Warden
 
+    configure :development do
+      register Sinatra::Reloader
+    end
+
     set :root, Sutty.root
 
     before do
-      authorize! '/login'
+      authorize! '/login' if ENV['RACK_ENV'] == 'production'
     end
 
     get '/' do
diff --git a/lib/sutty/models/jekyll.rb b/lib/sutty/models/jekyll.rb
deleted file mode 100644
index 3499cc6e..00000000
--- a/lib/sutty/models/jekyll.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-# frozen_string_literal: true
-
-module Sutty
-  # Un sitio jekyll
-  class Jekyll
-    # Devuelve todos los sitios dentro de sites_dir como instancias de
-    # Jekyll
-    def self.all
-      Dir.entries(Sutty.sites_dir).map do |j|
-        # no queremos . ni .. ni archivos ocultos
-        next if j.start_with? '.'
-
-        _j = File.realpath(File.join(Sutty.sites_dir, j))
-        next unless Jekyll.is_jekyll? _j
-
-        Jekyll.new(_j, j)
-      end.compact
-    end
-
-    # Comprueba que el directorio parezca ser de jekyll
-    def self.is_jekyll?(dir)
-      File.directory?(dir) && File.exists?(File.join(dir, '_config.yml'))
-    end
-
-    def initialize(dir, name = nil)
-      @root = dir
-      @name = name if name
-    end
-
-    def config
-      @config ||= YAML.load(File.read(File.join(@root, '_config.yml')))
-    end
-
-    def name
-      @name ||= File.basename(@root)
-    end
-
-  end
-end
diff --git a/lib/sutty/models/post.rb b/lib/sutty/models/post.rb
new file mode 100644
index 00000000..afaa246f
--- /dev/null
+++ b/lib/sutty/models/post.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+require 'yaml'
+
+module Sutty
+  module Models
+    # Un post
+    class Post
+      attr_accessor :content, :front_matter
+      attr_reader :post, :site
+
+      REJECT_FROM_DATA = %w[excerpt slug draft date ext].freeze
+
+      def initialize(site, post = nil)
+        @site = site
+        @post = post
+      end
+
+      def new?
+        !@post.is_a? Jekyll::Document
+      end
+
+      def save
+        front_matter_from_data!
+        clean_content!
+
+        return unless write.zero?
+
+        @post.read
+        true
+      end
+
+      private
+
+      def front_matter_from_data!
+        @front_matter ||= @post.data.reject do |key, _|
+          REJECT_FROM_DATA.include? key
+        end
+      end
+
+      # Aplica limpiezas básicas del contenido
+      def clean_content!
+        @content = @content.delete("\r")
+      end
+
+      def write
+        File.open(@post.path, File::RDWR | File::CREAT, 0o640) do |f|
+          # Bloquear el archivo para que no sea accedido por otro
+          # proceso u otra editora
+          f.flock(File::LOCK_EX)
+
+          # Empezar por el principio
+          f.rewind
+
+          # Escribir
+          f.write(full_content)
+
+          # Eliminar el resto
+          f.flush
+          f.truncate(f.pos)
+        end
+      end
+
+      def full_content
+        "#{@front_matter.to_yaml}---\n\n#{@content}"
+      end
+    end
+  end
+end
diff --git a/lib/sutty/post.rb b/lib/sutty/post.rb
new file mode 100644
index 00000000..1e603236
--- /dev/null
+++ b/lib/sutty/post.rb
@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+require 'sinatra/base'
+require 'sinatra/namespace'
+require 'sinatra/reloader' if ENV['RACK_ENV'] == 'development'
+require 'sinatra_warden'
+require_relative 'login'
+require_relative '../sutty'
+
+module Sutty
+  # El gestor de posts
+  class Post < Sinatra::Base
+    use Sutty::Login
+    register Sinatra::Warden
+    register Sinatra::Namespace
+
+    set :root, Sutty.root
+
+    configure :development do
+      register Sinatra::Reloader
+    end
+
+    namespace '/sites/:name/posts' do
+      before do
+        authorize! '/login' if ENV['RACK_ENV'] == 'production'
+        @site = Sutty.find(params['name'])
+        @site.read if @site.posts.docs.empty?
+      end
+
+      get do
+        haml :'posts/index'
+      end
+
+      namespace '/:basename' do
+        before do
+          @post = @site.posts.docs.select do |d|
+            d.basename == params['basename']
+          end.first
+        end
+
+        get do
+          haml :'posts/show'
+        end
+
+        get '/edit' do
+          haml :'posts/edit'
+        end
+
+        post do
+          post = Sutty::Models::Post.new(@site, @post)
+          post.content = params[:post][:content]
+
+          if post.save
+            flash[:success] = 'Artículo guardado con éxito'
+            redirect to("/sites/#{@site.name}/posts/#{@post.basename}")
+          else
+            flash[:error] = 'Hubo un error al guardar el artículo'
+            redirect back
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/sutty/site.rb b/lib/sutty/site.rb
new file mode 100644
index 00000000..9d09c25b
--- /dev/null
+++ b/lib/sutty/site.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require 'sinatra/base'
+require 'sinatra/namespace'
+require 'sinatra/reloader' if ENV['RACK_ENV'] == 'development'
+require 'sinatra_warden'
+require_relative 'login'
+require_relative 'post'
+require_relative '../sutty'
+
+module Sutty
+  # El gestor de sitios
+  class Site < Sinatra::Base
+    use Sutty::Login
+    register Sinatra::Warden
+    register Sinatra::Namespace
+
+    set :root, Sutty.root
+    set :read, false
+
+    configure :development do
+      register Sinatra::Reloader
+    end
+
+    namespace '/sites/:name' do
+      before do
+        authorize! '/login' if ENV['RACK_ENV'] == 'production'
+        @site = Sutty.find(params['name'])
+        @site.read if @site.posts.docs.empty?
+      end
+
+      get do
+        haml :'sites/show'
+      end
+
+      use Sutty::Post
+    end
+  end
+end
diff --git a/views/index.haml b/views/index.haml
index 2a907bb4..9289f740 100644
--- a/views/index.haml
+++ b/views/index.haml
@@ -5,4 +5,8 @@
   %tbody
     - Sutty.sites.each do |site|
       %tr
-        %td= site.name
+        %td
+          %a{href: '/sites/' + site.name}
+            = site.name
+        %td
+          %a{href: 'http://' + site.name} visitar
diff --git a/views/layout.haml b/views/layout.haml
index bcda0350..820927c5 100644
--- a/views/layout.haml
+++ b/views/layout.haml
@@ -6,7 +6,7 @@
     %link{rel: 'stylesheet', type: 'text/css', href: '/assets/css/bootstrap.min.css'}
     %link{rel: 'stylesheet', type: 'text/css', href: '/stylesheets/sutty.css'}
   %body{class: @has_cover ? 'background-cover' : ''}
-    .container
+    .container-fluid
       = yield
     %footer.footer
       %p{style: @has_cover ? 'color: white' : ''}
diff --git a/views/posts/_form.haml b/views/posts/_form.haml
new file mode 100644
index 00000000..37f1a42c
--- /dev/null
+++ b/views/posts/_form.haml
@@ -0,0 +1,6 @@
+%form{method: 'post', action: "/sites/#{@site.name}/posts/#{@post.basename}"}
+  .form-group
+    %button.btn.btn-success{type: 'submit'} Guardar
+  .form-group
+    %textarea.form-control{name: 'post[content]', id: 'contents', autofocus: true}
+      = @post.content
diff --git a/views/posts/edit.haml b/views/posts/edit.haml
new file mode 100644
index 00000000..38e4fd30
--- /dev/null
+++ b/views/posts/edit.haml
@@ -0,0 +1,9 @@
+.row
+  .col-2
+    = haml :'sites/_nav'
+  .col-10
+    %h1
+      Editando
+      = @post.data['title']
+
+    = haml :'posts/_form'
diff --git a/views/posts/index.haml b/views/posts/index.haml
new file mode 100644
index 00000000..dfbbeb92
--- /dev/null
+++ b/views/posts/index.haml
@@ -0,0 +1,13 @@
+.row
+  .col-2
+    = haml :'sites/_nav'
+  .col-10
+    %h1= @site.name
+
+    %table.table.table-striped
+      %tbody
+        - @site.posts.docs.each do |post|
+          %tr
+            %td
+              %a{href: "/sites/#{@site.name}/posts/#{post.basename}"}= post.data['title']
+            %td= post.date.strftime('%F')
diff --git a/views/posts/show.haml b/views/posts/show.haml
new file mode 100644
index 00000000..30183748
--- /dev/null
+++ b/views/posts/show.haml
@@ -0,0 +1,12 @@
+.row
+  .col-2
+    = haml :'sites/_nav'
+  .col-10
+    %a.btn.btn-info{href: "/sites/#{@site.name}/posts/#{@post.basename}/edit"}
+      Editar
+
+    %h1= @post.data['title']
+
+    .content
+      :markdown
+        #{@post.content}
diff --git a/views/sites/_nav.haml b/views/sites/_nav.haml
new file mode 100644
index 00000000..859b839d
--- /dev/null
+++ b/views/sites/_nav.haml
@@ -0,0 +1,5 @@
+%ul.nav.flex-column
+  %li.nav-item
+    %a.nav-link{href: "/sites/#{@site.name}/posts"}
+      Posts
+      %span.badge.badge-secondary= @site.posts.docs.count
diff --git a/views/sites/show.haml b/views/sites/show.haml
new file mode 100644
index 00000000..ab96c002
--- /dev/null
+++ b/views/sites/show.haml
@@ -0,0 +1,5 @@
+.row
+  .col-2
+    = haml :'sites/_nav'
+  .col-10
+    %h1= @site.name