diff --git a/pkgs/by-name/ds/dsd/package.nix b/pkgs/by-name/ds/dsd/package.nix
deleted file mode 100644
index eb5aaa2cc0bb..000000000000
--- a/pkgs/by-name/ds/dsd/package.nix
+++ /dev/null
@@ -1,49 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  cmake,
-  mbelib,
-  libsndfile,
-  itpp,
-  portaudioSupport ? true,
-  portaudio ? null,
-}:
-
-assert portaudioSupport -> portaudio != null;
-
-stdenv.mkDerivation {
-  pname = "dsd";
-  version = "2022-03-14";
-
-  src = fetchFromGitHub {
-    owner = "szechyjs";
-    repo = "dsd";
-    rev = "59423fa46be8b41ef0bd2f3d2b45590600be29f0";
-    sha256 = "128gvgkanvh4n5bjnzkfk419hf5fdbad94fb8d8lv67h94vfchyd";
-  };
-
-  nativeBuildInputs = [ cmake ];
-  buildInputs = [
-    mbelib
-    libsndfile
-    itpp
-  ]
-  ++ lib.optionals portaudioSupport [ portaudio ];
-
-  doCheck = true;
-
-  meta = with lib; {
-    description = "Digital Speech Decoder";
-    longDescription = ''
-      DSD is able to decode several digital voice formats from discriminator
-      tap audio and synthesize the decoded speech. Speech synthesis requires
-      mbelib, which is a separate package.
-    '';
-    homepage = "https://github.com/szechyjs/dsd";
-    license = licenses.gpl2;
-    platforms = platforms.unix;
-    maintainers = [ ];
-    mainProgram = "dsd";
-  };
-}
diff --git a/pkgs/by-name/it/itpp/package.nix b/pkgs/by-name/it/itpp/package.nix
deleted file mode 100644
index e419a181dd68..000000000000
--- a/pkgs/by-name/it/itpp/package.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  cmake,
-  gtest,
-  blas,
-  fftw,
-  liblapack,
-  gfortran,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "it++";
-  version = "4.3.1";
-
-  src = fetchurl {
-    url = "mirror://sourceforge/itpp/itpp-${version}.tar.bz2";
-    sha256 = "0xxqag9wi0lg78xgw7b40rp6wxqp5grqlbs9z0ifvdfzqlhpcwah";
-  };
-
-  nativeBuildInputs = [
-    cmake
-    gfortran
-  ];
-  buildInputs = [
-    fftw
-    liblapack
-
-    # NOTE: OpenBLAS doesn't work here because IT++ doesn't pass aligned
-    # buffers, which causes segfaults in the optimized kernels :-(
-    blas
-  ];
-
-  cmakeFlags = [
-    "-DCMAKE_CXX_FLAGS=-std=c++14"
-    "-DBLAS_FOUND:BOOL=TRUE"
-    "-DBLAS_LIBRARIES:STRING=${blas}/lib/libblas.so"
-    "-DLAPACK_FOUND:BOOL=TRUE"
-    "-DLAPACK_LIBRARIES:STRING=${liblapack}/lib/liblapack.so"
-    "-DGTEST_DIR:PATH=${gtest.src}/googletest"
-  ];
-
-  doCheck = true;
-
-  checkPhase = ''
-    ./gtests/itpp_gtests
-  '';
-
-  meta = with lib; {
-    description = "IT++ is a C++ library of mathematical, signal processing and communication classes and functions";
-    mainProgram = "itpp-config";
-    homepage = "https://itpp.sourceforge.net/";
-    license = licenses.gpl3;
-    platforms = platforms.unix;
-    maintainers = [ ];
-    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/itpp.x86_64-darwin
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 6a6ac68b11a7..d968baee6874 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -768,6 +768,7 @@ mapAliases {
   dotnetenv = throw "'dotnetenv' has been removed because it was unmaintained in Nixpkgs"; # Added 2025-07-11
   downonspot = throw "'downonspot' was removed because upstream has been taken down by a cease and desist"; # Added 2025-01-25
   dozenal = throw "dozenal has been removed because it does not compile and only minimal functionality"; # Added 2025-03-30
+  dsd = throw "dsd has been removed, as it was broken and lack of upstream maintenance"; # Added 2025-08-25
   dstat = throw "'dstat' has been removed because it has been unmaintained since 2020. Use 'dool' instead."; # Added 2025-01-21
   drush = throw "drush as a standalone package has been removed because it's no longer supported as a standalone tool";
   dtv-scan-tables_linuxtv = dtv-scan-tables; # Added 2023-03-03
@@ -1175,6 +1176,7 @@ mapAliases {
   istatmenus = throw "istatmenus has beend renamed to istat-menus"; # Added 2025-05-05
   iso-flags-png-320x420 = lib.warnOnInstantiate "iso-flags-png-320x420 has been renamed to iso-flags-png-320x240" iso-flags-png-320x240; # Added 2024-07-17
   itktcl = tclPackages.itktcl; # Added 2024-10-02
+  itpp = throw "itpp has been removed, as it was broken"; # Added 2025-08-25
   iv = throw "iv has been removed as it was no longer required for neuron and broken"; # Added 2025-04-18
   ix = throw "ix has been removed from Nixpkgs, as the ix.io pastebin has been offline since Dec. 2023"; # Added 2025-04-11