diff --git a/pkgs/development/libraries/prototypejs/default.nix b/pkgs/development/libraries/prototypejs/default.nix
new file mode 100644
index 000000000000..a56b14384e5b
--- /dev/null
+++ b/pkgs/development/libraries/prototypejs/default.nix
@@ -0,0 +1,23 @@
+{ stdenv, fetchurl, ... }:
+let
+  version = "1.7.3.0";
+in fetchurl {
+  name = "prototype-${version}.js";
+  url = "https://ajax.googleapis.com/ajax/libs/prototype/${version}/prototype.js";
+  sha256 = "0q43vvrsb22h4jvavs1gk3v4ps61yx9k85b5n6q9mxivhmxprg26";
+
+  meta = with stdenv.lib; {
+    description = "A foundation for ambitious web user interfaces";
+    longDescription = ''
+      Prototype takes the complexity out of client-side web
+      programming. Built to solve real-world problems, it adds
+      useful extensions to the browser scripting environment
+      and provides elegant APIs around the clumsy interfaces
+      of Ajax and the Document Object Model.
+    '';
+    homepage = http://prototypejs.org/;
+    downloadPage = http://prototypejs.org/download/;
+    license = licenses.mit;
+    maintainers = with maintainers; [ das_j ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 09ee4454fe2f..20199eb9fbf7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4684,6 +4684,8 @@ with pkgs;
 
   proot = callPackage ../tools/system/proot { };
 
+  prototypejs = callPackage ../development/libraries/prototypejs { };
+
   proxychains = callPackage ../tools/networking/proxychains { };
 
   proxytunnel = callPackage ../tools/misc/proxytunnel { };