diff --git a/assets/javascripts/templates/pages/about_tmpl.coffee b/assets/javascripts/templates/pages/about_tmpl.coffee
index c3c0fdec..5fc27d3c 100644
--- a/assets/javascripts/templates/pages/about_tmpl.coffee
+++ b/assets/javascripts/templates/pages/about_tmpl.coffee
@@ -721,6 +721,11 @@ credits = [
     '2018 HashiCorp',
     'MPL',
     'https://raw.githubusercontent.com/hashicorp/terraform-website/master/LICENSE.md'
+  ], [
+    'Trio',
+    '2017 Nathaniel J. Smith',
+    'MIT',
+    'https://raw.githubusercontent.com/python-trio/trio/master/LICENSE.MIT'
   ], [
     'Twig',
     '2009-2018 The Twig Team',
diff --git a/lib/docs/filters/trio/clean_html.rb b/lib/docs/filters/trio/clean_html.rb
new file mode 100644
index 00000000..00919535
--- /dev/null
+++ b/lib/docs/filters/trio/clean_html.rb
@@ -0,0 +1,58 @@
+module Docs
+  class Trio
+    class CleanHtmlFilter < Filter
+      def call
+        @doc = at_css('div[role="main"]')
+
+        css('.section, [itemprop=articleBody]').each do |node|
+          node.replace node.children
+        end
+
+        css('.headerlink').remove
+
+        css('dt').each do |node|
+          node.name = 'h3'
+
+          if node.parent.classes.include? 'field-list'
+            node.name = 'h4'
+            node['style'] = 'margin: 0'
+
+            if node.text == 'Parameters' or node.text == 'Raises'
+              node.next_element.css('strong').each do |n|
+                n.name = 'code'
+              end
+            end
+          else
+            code = doc.document.create_element 'code'
+
+            if em = node.at_css('.property')
+              code.inner_html = "<em>#{em.text.strip}</em> "
+              em.remove
+            end
+
+            code.inner_html += node.inner_text.strip
+            node.inner_html = code
+          end
+        end
+
+        css('pre').each do |node|
+          node.content = node.content.strip
+
+          classes = node.parent.parent.classes
+          if classes.include? 'highlight-python3'
+            node['data-language'] = 'python'
+          end
+
+          node.parent.parent.replace(node)
+        end
+
+        css('.admonition').each do |node|
+          node.name = 'blockquote'
+          node.at_css('.admonition-title').name = 'h4'
+        end
+
+        doc
+      end
+    end
+  end
+end
diff --git a/lib/docs/filters/trio/entries.rb b/lib/docs/filters/trio/entries.rb
new file mode 100644
index 00000000..7c6aa76b
--- /dev/null
+++ b/lib/docs/filters/trio/entries.rb
@@ -0,0 +1,48 @@
+module Docs
+  class Trio
+    class EntriesFilter < Docs::EntriesFilter
+      def get_name
+        at_css('h1').text[0...-1]
+      end
+
+      def get_type
+        at_css('h1').text[0...-1]
+      end
+
+      def additional_entries
+        css('.descname').each_with_object [] do |node, entries|
+          name = node.text
+          if node.previous.classes.include? 'descclassname'
+            name = node.previous.text + name
+          end
+          name.strip!
+
+          dl = node.parent.parent
+
+          if dl.classes.include?('attribute') \
+              or dl.classes.include?('method') \
+              or dl.classes.include?('data')
+            parent = dl.parent.previous_element
+            cls = ''
+
+            if n = parent.at_css('.descclassname')
+              cls += n.text
+            end
+
+            if n = parent.at_css('.descname')
+              if n.text == "The nursery interface"
+                cls += "Nursery."
+              else
+                cls += n.text + '.'
+              end
+            end
+
+            name = cls + name
+          end
+
+          entries << [name, node.parent['id']]
+        end
+      end
+    end
+  end
+end
diff --git a/lib/docs/scrapers/trio.rb b/lib/docs/scrapers/trio.rb
new file mode 100644
index 00000000..b8719bea
--- /dev/null
+++ b/lib/docs/scrapers/trio.rb
@@ -0,0 +1,31 @@
+module Docs
+  class Trio < UrlScraper
+    self.type = 'simple'
+    self.release = '0.12.1'
+    self.base_url = 'https://trio.readthedocs.io/en/v0.12.1/'
+    self.root_path = 'index.html'
+    self.links = {
+      home: 'https://trio.readthedocs.io/',
+      code: 'https://github.com/python-trio/trio'
+    }
+
+    html_filters.push 'trio/entries', 'trio/clean_html'
+
+    options[:only_patterns] = [
+      /reference-core/,
+      /reference-io/,
+      /reference-testing/,
+      /reference-hazmat/,
+    ]
+
+    options[:attribution] = <<-HTML
+      &copy; 2017 Nathaniel J. Smith<br>
+      Licensed under the MIT License.
+    HTML
+
+    def get_latest_version(opts)
+      doc = fetch_doc('https://trio.readthedocs.io/en/stable/', opts)
+      doc.at_css('.rst-other-versions a[href^="/en/v"]').content[1..-1]
+    end
+  end
+end
diff --git a/public/icons/docs/trio/16.png b/public/icons/docs/trio/16.png
new file mode 100644
index 00000000..f1fbc1fa
Binary files /dev/null and b/public/icons/docs/trio/16.png differ
diff --git a/public/icons/docs/trio/16@2x.png b/public/icons/docs/trio/16@2x.png
new file mode 100644
index 00000000..afc88081
Binary files /dev/null and b/public/icons/docs/trio/16@2x.png differ
diff --git a/public/icons/docs/trio/SOURCE b/public/icons/docs/trio/SOURCE
new file mode 100644
index 00000000..52a2abea
--- /dev/null
+++ b/public/icons/docs/trio/SOURCE
@@ -0,0 +1 @@
+https://github.com/python-trio/trio/blob/37de153f858e29df3a19db9fffcd0fb3f2308951/logo/logo-transparent-no-text.svg