diff --git a/pkgs/default.nix b/pkgs/default.nix
index 032bc44e..1e848b36 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -10,6 +10,7 @@ let
       blueprint-compiler = callPackage ./blueprint-compiler.nix { };
       butler = callPackage ./butler.nix { };
       clidle = callPackage ./clidle.nix { };
+      domterm = callPackage ./domterm { };
       freerct = callPackage ./freerct.nix { };
       distant = callPackage ./distant.nix { };
       devdocs-desktop = callPackage ./devdocs-desktop.nix { };
diff --git a/pkgs/domterm/default.nix b/pkgs/domterm/default.nix
new file mode 100644
index 00000000..c6675252
--- /dev/null
+++ b/pkgs/domterm/default.nix
@@ -0,0 +1,58 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, desktop-file-utils, pkg-config
+, libwebsockets, json_c, openssl, asciidoctor, unixtools, zlib,
+
+# For including Java classes. Take note it doesn't compile them properly and it
+# still builds successfully so including them is disabled by default.
+openjdk,
+
+# For Qt backend which is included by default.
+qt5,
+
+enableQt ? true, enableJava ? false }:
+
+# TODO: Compile with the experimental wry backend.
+# * Wait until gdk-pixbuf is >=3.0.
+stdenv.mkDerivation rec {
+  pname = "domterm";
+  version = "unstable-2022-05-13";
+
+  src = fetchFromGitHub {
+    owner = "PerBothner";
+    repo = "DomTerm";
+    rev = "b78f55a595b82a28042ac5297a1c1b0cce30cdc3";
+    sha256 = "sha256-U0w9i3Eb/tAUTRWuIjhO4xfOgR0Xa4I4hSpkHuVeG9c=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ]
+    ++ lib.optional enableQt qt5.wrapQtAppsHook;
+
+  buildInputs = [
+    asciidoctor
+    desktop-file-utils
+    json_c
+    libwebsockets
+    openssl
+    unixtools.xxd
+    zlib
+  ] ++ lib.optionals enableQt (with qt5; [ qtbase qtwebengine qtwebchannel ])
+    ++ lib.optional enableJava openjdk;
+
+  configureFlags = [
+    "--disable-java-pty"
+    "--with-libwebsockets"
+
+    # Until the dependencies are updated (e.g., `gdk-pixbuf >= 3.0`), this is
+    # going to be painful to build.
+    "--without-wry"
+  ] ++ lib.optional enableJava "--with-java"
+    ++ lib.optional enableQt "--with-qt";
+
+  # Force Java to take input as UTF-8 instead of ASCII.
+  JAVA_TOOL_OPTIONS = "-Dfile.encoding=UTF8";
+
+  meta = with lib; {
+    homepage = "https://domterm.org/";
+    description = "Terminal emulator based on web technologies.";
+    license = licenses.bsd3;
+  };
+}