diff --git a/pkgs/by-name/an/anyk/package.nix b/pkgs/by-name/an/anyk/package.nix
new file mode 100644
index 000000000000..dfd97fd62273
--- /dev/null
+++ b/pkgs/by-name/an/anyk/package.nix
@@ -0,0 +1,145 @@
+{ stdenv
+, lib
+, fetchurl
+, fetchzip
+, openjdk
+, writeScript
+, runCommandLocal
+, bash
+, unzip
+, makeWrapper
+, libredirect
+, xsettingsd
+, makeDesktopItem
+, copyDesktopItems
+, python3
+}:
+let
+  # Downloads can be found here: https://nav.gov.hu/nyomtatvanyok/letoltesek/nyomtatvanykitolto_programok/nyomtatvany_apeh/keretprogramok/AbevJava
+  # There are no versioned download URLs but archive.org can be used to preserve them.
+  # The original download URL is: https://nav.gov.hu/pfile/programFile?path=/nyomtatvanyok/letoltesek/nyomtatvanykitolto_programok/nyomtatvany_apeh/keretprogramok/AbevJava
+  # You can put the URL here to create a fresh archive URL: https://web.archive.org/save
+  abevjavaSrc = fetchzip {
+    url = "https://web.archive.org/web/20231106112510if_/https://nav.gov.hu/pfile/programFile?path=/nyomtatvanyok/letoltesek/nyomtatvanykitolto_programok/nyomtatvany_apeh/keretprogramok/AbevJava";
+    sha256 = "sha256-qt0mHv3HI6C8OltFjSR47+RLSnmB2Si5U8rXEvdN4/c=";
+    extension = "zip";
+    stripRoot = false;
+  };
+
+  # ÁNYK uses some SOAP stuff that's not shipped with OpenJDK any more.
+  # We don't really want to use openjdk8 because it's unusable on HiDPI
+  # and people are more likely to have a modern OpenJDK installed.
+  extraClasspath = [
+    (fetchurl {
+      url = "mirror://maven/org/glassfish/metro/webservices-rt/2.4.10/webservices-rt-2.4.10.jar";
+      sha256 = "sha256-lHclIZn3HR2B2lMttmmQGIV67qJi5KhL5jT2WNUQpPI=";
+    })
+
+    (fetchurl {
+      url = "mirror://maven/org/glassfish/metro/webservices-api/2.4.10/webservices-api-2.4.10.jar";
+      sha256 = "sha256-1jiabjPkRnh+l/fmTt8aKE5hpeLreYOiLH9sVIcLUQE=";
+    })
+
+    (fetchurl {
+      url = "mirror://maven/com/sun/activation/jakarta.activation/2.0.1/jakarta.activation-2.0.1.jar";
+      sha256 = "sha256-ueJLfdbgdJVWLqllMb4xMMltuk144d/Yitu96/QzKHE=";
+    })
+
+    # Patch one of the classes so it works with the packages above by removing .internal. from the package names.
+    (runCommandLocal "anyk-patch" {} ''
+      mkdir $out
+      cd $out
+      ${unzip}/bin/unzip ${abevjavaSrc}/application/abevjava.jar hu/piller/enykp/niszws/ClientStubBuilder.class
+      ${python3}/bin/python ${./patch_paths.py} hu/piller/enykp/niszws/ClientStubBuilder.class
+    '')
+  ];
+
+  # This script can be used to run template installation jars (or use the Szervíz -> Telepítés menu)
+  anyk-java = writeScript "anyk-java" ''
+    if [ -f ~/.abevjava/abevjavapath.cfg ]
+    then
+      if ABEVJAVA_PATH_CFG=$(grep abevjava.path ~/.abevjava/abevjavapath.cfg)
+      then
+        ABEVJAVA_PATH=''${ABEVJAVA_PATH_CFG#abevjava.path = }
+        echo "Determined abevjava path as $ABEVJAVA_PATH"
+      else
+        echo "Could not determine abevjava path from ~/.abevjava/abevjavapath.cfg"
+        exit 1
+      fi
+    else
+      ABEVJAVA_PATH=~/abevjava
+      mkdir -p ~/.abevjava
+      echo "abevjava.path = $ABEVJAVA_PATH" > ~/.abevjava/abevjavapath.cfg
+      echo "Initialized abevjava path as $ABEVJAVA_PATH"
+    fi
+
+    # Sync help files.
+    mkdir -p "$ABEVJAVA_PATH/segitseg/"
+    cp -sRf --no-preserve=all @out@/opt/segitseg/. "$ABEVJAVA_PATH/segitseg"
+
+    export LD_PRELOAD=${libredirect}/lib/libredirect.so:$LD_PRELOAD
+    # Look for form templates in ABEVJAVA_PATH instead of the install dir.
+    export NIX_REDIRECTS=@out@/opt/nyomtatvanyok=$ABEVJAVA_PATH/nyomtatvanyok:@out@/opt/segitseg=$ABEVJAVA_PATH/segitseg:@out@/opt/setenv=$ABEVJAVA_PATH/setenv:/bin/bash=${bash}/bin/bash:$NIX_REDIRECTS
+    if WINDOW_SCALING_FACTOR=$(${xsettingsd}/bin/dump_xsettings | awk '/Gdk\/WindowScalingFactor/{print $NF}'  | grep .); then
+      # Fix scaling on HiDPI.
+      SCALING_PROP="-Dsun.java2d.uiScale=''${WINDOW_SCALING_FACTOR}"
+    fi
+    # ÁNYK crashes with NullPointerException with the GTK look and feel so use the cross-platform one.
+    exec ${openjdk}/bin/java -Dswing.systemlaf=javax.swing.plaf.metal.MetalLookAndFeel $SCALING_PROP "$@"
+  '';
+in stdenv.mkDerivation {
+  pname = "anyk";
+  version = "3.26.0";
+
+  src = abevjavaSrc;
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ makeWrapper copyDesktopItems ];
+
+  desktopItems = [
+    (makeDesktopItem rec {
+      desktopName = "ÁNYK";
+      name = "anyk";
+      exec = "anyk";
+      icon = "anyk";
+      categories = [ "Office" ];
+    })
+  ];
+
+  installPhase = ''
+    mkdir $out
+    cp -r application $out/opt
+
+    mkdir $out/bin
+    substituteAll ${anyk-java} $out/bin/anyk-java
+    chmod +x $out/bin/anyk-java
+
+    # ÁNYK has some old school dependencies that are no longer bundled with Java, put them on the classpath.
+    makeWrapper $out/bin/anyk-java $out/bin/anyk --add-flags "-cp ${lib.concatStringsSep ":" extraClasspath}:$out/opt/abevjava.jar hu.piller.enykp.gui.framework.MainFrame"
+
+    mkdir -p $out/share/applications $out/share/pixmaps $out/share/icons
+
+    copyDesktopItems
+
+    ln -s $out/opt/abevjava.png $out/share/pixmaps/anyk.png
+    ln -s $out/opt/abevjava.png $out/share/icons/anyk.png
+  '';
+
+  meta = with lib; {
+    description = "Tool for filling forms for the Hungarian government,";
+    longDescription = ''
+      Official tool for filling Hungarian government forms.
+
+      Use `anyk-java` to install form templates/help files like this: `anyk-java -jar NAV_IGAZOL.jar`
+    '';
+    homepage = "https://nav.gov.hu/nyomtatvanyok/letoltesek/nyomtatvanykitolto_programok/nyomtatvany_apeh/keretprogramok/javakitolto";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ chpatrick ];
+    platforms = openjdk.meta.platforms;
+    sourceProvenance = [ sourceTypes.binaryBytecode ];
+    mainProgram = "anyk";
+  };
+}
+
diff --git a/pkgs/by-name/an/anyk/patch_paths.py b/pkgs/by-name/an/anyk/patch_paths.py
new file mode 100644
index 000000000000..5e2306bd3c9a
--- /dev/null
+++ b/pkgs/by-name/an/anyk/patch_paths.py
@@ -0,0 +1,35 @@
+from pathlib import Path
+from struct import pack
+import sys
+
+def to_java_string(string) -> bytes:
+  string_bytes = string.encode("utf-8")
+  # Java constant pool string entries are prefixed by 0x01 and 16-bit big-endian string length.
+  return pack(">BH", 1, len(string_bytes)) + string_bytes
+
+class_file = Path(sys.argv[1])
+
+clazz = class_file.read_bytes()
+
+# We want to fix these package names so they work with the open-source Java EE releases instead of OpenJDK 8.
+patches = [
+  ( "com/sun/xml/internal/ws/developer/WSBindingProvider", "com/sun/xml/ws/developer/WSBindingProvider" ),
+  ( "com/sun/xml/internal/ws/api/message/Header", "com/sun/xml/ws/api/message/Header" ),
+  ( "com.sun.xml.internal.ws.transport.http.client.streaming.chunk.size", "com.sun.xml.ws.transport.http.client.streaming.chunk.size" ),
+  ( "com/sun/xml/internal/ws/api/message/Headers", "com/sun/xml/ws/api/message/Headers" ),
+  ( "(Lorg/w3c/dom/Element;)Lcom/sun/xml/internal/ws/api/message/Header;", "(Lorg/w3c/dom/Element;)Lcom/sun/xml/ws/api/message/Header;" ),
+  ( "([Lcom/sun/xml/internal/ws/api/message/Header;)V", "([Lcom/sun/xml/ws/api/message/Header;)V" ),
+]
+
+for old, new in patches:
+  old_java = to_java_string(old)
+  new_java = to_java_string(new)
+  assert old_java in clazz
+  clazz = clazz.replace(old_java, new_java)
+  assert old_java not in clazz
+  assert new_java in clazz
+
+assert b".internal." not in clazz
+
+class_file.write_bytes(clazz)
+