diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 83c9cb3e6a9a..4bb22c7a6b01 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -3302,6 +3302,11 @@
     github = "mvnetbiz";
     name = "Matt Votava";
   };
+  mwilsoninsight = {
+    email = "max.wilson@insight.com";
+    github = "mwilsoninsight";
+    name = "Max Wilson";
+  };
   myrl = {
     email = "myrl.0xf@gmail.com";
     github = "myrl";
diff --git a/pkgs/servers/http/showoff/Gemfile b/pkgs/servers/http/showoff/Gemfile
new file mode 100644
index 000000000000..cfd295096bc1
--- /dev/null
+++ b/pkgs/servers/http/showoff/Gemfile
@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'showoff'
diff --git a/pkgs/servers/http/showoff/Gemfile.lock b/pkgs/servers/http/showoff/Gemfile.lock
new file mode 100644
index 000000000000..ccf0415d440b
--- /dev/null
+++ b/pkgs/servers/http/showoff/Gemfile.lock
@@ -0,0 +1,73 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.6.0)
+      public_suffix (>= 2.0.2, < 4.0)
+    commonmarker (0.18.2)
+      ruby-enum (~> 0.5)
+    concurrent-ruby (1.1.5)
+    daemons (1.3.1)
+    em-websocket (0.3.8)
+      addressable (>= 2.1.1)
+      eventmachine (>= 0.12.9)
+    eventmachine (1.2.7)
+    fidget (0.0.6)
+      ruby-dbus (< 0.15.0)
+    gli (2.18.0)
+    htmlentities (4.3.4)
+    i18n (1.6.0)
+      concurrent-ruby (~> 1.0)
+    iso-639 (0.2.8)
+    json (2.2.0)
+    mini_portile2 (2.4.0)
+    nokogiri (1.10.1)
+      mini_portile2 (~> 2.4.0)
+    parslet (1.8.2)
+    public_suffix (3.0.3)
+    rack (1.6.11)
+    rack-contrib (1.8.0)
+      rack (~> 1.4)
+    rack-protection (1.5.5)
+      rack
+    redcarpet (3.4.0)
+    ruby-dbus (0.14.1)
+    ruby-enum (0.7.2)
+      i18n
+    showoff (0.20.1)
+      commonmarker
+      fidget (>= 0.0.3)
+      gli (>= 2.0)
+      htmlentities
+      i18n
+      iso-639
+      json
+      nokogiri
+      parslet
+      rack-contrib
+      redcarpet
+      sinatra (~> 1.3)
+      sinatra-websocket
+      thin (~> 1.3)
+      tilt (>= 2.0.3)
+    sinatra (1.4.8)
+      rack (~> 1.5)
+      rack-protection (~> 1.4)
+      tilt (>= 1.3, < 3)
+    sinatra-websocket (0.3.1)
+      em-websocket (~> 0.3.6)
+      eventmachine
+      thin (>= 1.3.1, < 2.0.0)
+    thin (1.7.2)
+      daemons (~> 1.0, >= 1.0.9)
+      eventmachine (~> 1.0, >= 1.0.4)
+      rack (>= 1, < 3)
+    tilt (2.0.9)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  showoff
+
+BUNDLED WITH
+   1.16.3
diff --git a/pkgs/servers/http/showoff/default.nix b/pkgs/servers/http/showoff/default.nix
new file mode 100644
index 000000000000..79b92bdd7c57
--- /dev/null
+++ b/pkgs/servers/http/showoff/default.nix
@@ -0,0 +1,16 @@
+{ lib, bundlerApp }:
+
+bundlerApp {
+  pname = "showoff";
+  gemdir = ./.;
+  exes = [ "showoff" ];
+
+  meta = with lib; {
+    description = "A slideshow presentation tool with a twist";
+    longDescription = "It runs as a web application, with audience interactivity features. This means that your audience can follow along in their own browsers, can download supplemental materials, can participate in quizzes or polls, post questions for the presenter, etc. By default, their slideshows will synchronize with the presenter, but they can switch to self-navigation mode";
+    homepage = https://puppetlabs.github.io/showoff/;
+    license = with licenses; mit;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ mwilsoninsight ];
+  };
+}
diff --git a/pkgs/servers/http/showoff/gemset.nix b/pkgs/servers/http/showoff/gemset.nix
new file mode 100644
index 000000000000..334f09e8a0d0
--- /dev/null
+++ b/pkgs/servers/http/showoff/gemset.nix
@@ -0,0 +1,231 @@
+{
+  addressable = {
+    dependencies = ["public_suffix"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0bcm2hchn897xjhqj9zzsxf3n9xhddymj4lsclz508f4vw3av46l";
+      type = "gem";
+    };
+    version = "2.6.0";
+  };
+  commonmarker = {
+    dependencies = ["ruby-enum"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "122dy5mzx4p86flpzyg3raf742zp5ab9bjr7zk29p3ixpncf0rdk";
+      type = "gem";
+    };
+    version = "0.18.2";
+  };
+  concurrent-ruby = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1x07r23s7836cpp5z9yrlbpljcxpax14yw4fy4bnp6crhr6x24an";
+      type = "gem";
+    };
+    version = "1.1.5";
+  };
+  daemons = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0l5gai3vd4g7aqff0k1mp41j9zcsvm2rbwmqn115a325k9r7pf4w";
+      type = "gem";
+    };
+    version = "1.3.1";
+  };
+  em-websocket = {
+    dependencies = ["addressable" "eventmachine"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0xkb1rc6dd3y5s7qsp4wqrri3n9gwsbvnwwv6xwgp241jxdpp4iq";
+      type = "gem";
+    };
+    version = "0.3.8";
+  };
+  eventmachine = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0wh9aqb0skz80fhfn66lbpr4f86ya2z5rx6gm5xlfhd05bj1ch4r";
+      type = "gem";
+    };
+    version = "1.2.7";
+  };
+  fidget = {
+    dependencies = ["ruby-dbus"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "04g2846wjlb8ms5041lv37aqs4jzsziwv58bxg7yzc61pdvi4ksb";
+      type = "gem";
+    };
+    version = "0.0.6";
+  };
+  gli = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "133glfzsq67ykmdsgp251s9kddg9x4qki2jpbjv25h3hawlql4hs";
+      type = "gem";
+    };
+    version = "2.18.0";
+  };
+  htmlentities = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1nkklqsn8ir8wizzlakncfv42i32wc0w9hxp00hvdlgjr7376nhj";
+      type = "gem";
+    };
+    version = "4.3.4";
+  };
+  i18n = {
+    dependencies = ["concurrent-ruby"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1hfxnlyr618s25xpafw9mypa82qppjccbh292c4l3bj36az7f6wl";
+      type = "gem";
+    };
+    version = "1.6.0";
+  };
+  iso-639 = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "10k1gpkkbxbasgjzh4hd32ygxzjb5312rphipm46ryxkpx556zzz";
+      type = "gem";
+    };
+    version = "0.2.8";
+  };
+  json = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0sx97bm9by389rbzv8r1f43h06xcz8vwi3h5jv074gvparql7lcx";
+      type = "gem";
+    };
+    version = "2.2.0";
+  };
+  mini_portile2 = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15zplpfw3knqifj9bpf604rb3wc1vhq6363pd6lvhayng8wql5vy";
+      type = "gem";
+    };
+    version = "2.4.0";
+  };
+  nokogiri = {
+    dependencies = ["mini_portile2"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "09zll7c6j7xr6wyvh5mm5ncj6pkryp70ybcsxdbw1nyphx5dh184";
+      type = "gem";
+    };
+    version = "1.10.1";
+  };
+  parslet = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "12nrzfwjphjlakb9pmpj70hgjwgzvnr8i1zfzddifgyd44vspl88";
+      type = "gem";
+    };
+    version = "1.8.2";
+  };
+  public_suffix = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "08q64b5br692dd3v0a9wq9q5dvycc6kmiqmjbdxkxbfizggsvx6l";
+      type = "gem";
+    };
+    version = "3.0.3";
+  };
+  rack = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1g9926ln2lw12lfxm4ylq1h6nl0rafl10za3xvjzc87qvnqic87f";
+      type = "gem";
+    };
+    version = "1.6.11";
+  };
+  rack-contrib = {
+    dependencies = ["rack"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1l7m0av4pjl5p64l8j7pkip1jwhkp80a8kc2j7b9lrwh04fgx5wx";
+      type = "gem";
+    };
+    version = "1.8.0";
+  };
+  rack-protection = {
+    dependencies = ["rack"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0my0wlw4a5l3hs79jkx2xzv7djhajgf8d28k8ai1ddlnxxb0v7ss";
+      type = "gem";
+    };
+    version = "1.5.5";
+  };
+  redcarpet = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0h9qz2hik4s9knpmbwrzb3jcp3vc5vygp9ya8lcpl7f1l9khmcd7";
+      type = "gem";
+    };
+    version = "3.4.0";
+  };
+  ruby-dbus = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "16lsqdwas6ngyyvq51l7lynj5ayis17zm5hpsg5x3m3n6r5k2gv4";
+      type = "gem";
+    };
+    version = "0.14.1";
+  };
+  ruby-enum = {
+    dependencies = ["i18n"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0h62avini866kxpjzqxlqnajma3yvj0y25l6hn9h2mv5pp6fcrhx";
+      type = "gem";
+    };
+    version = "0.7.2";
+  };
+  showoff = {
+    dependencies = ["commonmarker" "fidget" "gli" "htmlentities" "i18n" "iso-639" "json" "nokogiri" "parslet" "rack-contrib" "redcarpet" "sinatra" "sinatra-websocket" "thin" "tilt"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "14884kh7vrp5b72dpn7q26h49y7igxqza72girkv1h28qx4kqw4r";
+      type = "gem";
+    };
+    version = "0.20.1";
+  };
+  sinatra = {
+    dependencies = ["rack" "rack-protection" "tilt"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0byxzl7rx3ki0xd7aiv1x8mbah7hzd8f81l65nq8857kmgzj1jqq";
+      type = "gem";
+    };
+    version = "1.4.8";
+  };
+  sinatra-websocket = {
+    dependencies = ["em-websocket" "eventmachine" "thin"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0as52mfw34z3ba6qjab009h2rdn0za0iwrc42kw948hbb8qzcm5m";
+      type = "gem";
+    };
+    version = "0.3.1";
+  };
+  thin = {
+    dependencies = ["daemons" "eventmachine" "rack"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0nagbf9pwy1vg09k6j4xqhbjjzrg5dwzvkn4ffvlj76fsn6vv61f";
+      type = "gem";
+    };
+    version = "1.7.2";
+  };
+  tilt = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ca4k0clwf0rkvy7726x4nxpjxkpv67w043i39saxgldxd97zmwz";
+      type = "gem";
+    };
+    version = "2.0.9";
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1f3b839b9994..2653ad8ae414 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14322,6 +14322,8 @@ in
 
   shairport-sync = callPackage ../servers/shairport-sync { };
 
+  showoff = callPackage ../servers/http/showoff {};
+
   serfdom = callPackage ../servers/serf { };
 
   seyren = callPackage ../servers/monitoring/seyren { };