diff --git a/pkgs/by-name/ni/nix-top/package.nix b/pkgs/by-name/ni/nix-top/package.nix
new file mode 100644
index 000000000000..55170ec40896
--- /dev/null
+++ b/pkgs/by-name/ni/nix-top/package.nix
@@ -0,0 +1,62 @@
+{
+  binutils-unwrapped, # strings
+  coreutils,
+  getent, # /etc/passwd
+  fetchFromGitHub,
+  findutils,
+  lib,
+  makeWrapper,
+  ncurses, # tput
+  ruby,
+  stdenv,
+}:
+
+# No gems used, so mkDerivation is fine.
+let
+  additionalPath = lib.makeBinPath [
+    getent
+    ncurses
+    binutils-unwrapped
+    coreutils
+    findutils
+  ];
+in
+stdenv.mkDerivation rec {
+  pname = "nix-top";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "jerith666";
+    repo = "nix-top";
+    rev = "v${version}";
+    hash = "sha256-w/TKzbZmMt4CX2KnLwPvR1ydp5NNlp9nNx78jJvhp54=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  buildInputs = [ ruby ];
+
+  installPhase =
+    ''
+      runHook preInstall
+      mkdir -p $out/libexec/nix-top
+      install -D -m755 ./nix-top $out/bin/nix-top
+      wrapProgram $out/bin/nix-top \
+        --prefix PATH : "$out/libexec/nix-top:${additionalPath}"
+    ''
+    + lib.optionalString stdenv.isDarwin ''
+      ln -s /bin/stty $out/libexec/nix-top
+    ''
+    + ''
+      runHook postInstall
+    '';
+
+  meta = {
+    description = "Tracks what nix is building";
+    homepage = "https://github.com/jerith666/nix-top";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.jerith666 ];
+    platforms = lib.platforms.unix;
+    mainProgram = "nix-top";
+  };
+}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 4f0b3a9f0aee..bfae0778e2db 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -953,7 +953,6 @@ mapAliases ({
   );
   nix-review = throw "'nix-review' has been renamed to/replaced by 'nixpkgs-review'"; # Converted to throw 2023-09-10
   nix-template-rpm = throw "'nix-template-rpm' has been removed as it is broken and unmaintained"; # Added 2023-11-20
-  nix-top = throw "The nix-top package was dropped since it was unmaintained."; # Added 2024-06-21
   nix-universal-prefetch = throw "The nix-universal-prefetch package was dropped since it was unmaintained."; # Added 2024-06-21
   nixFlakes = nixVersions.stable; # Added 2021-05-21
   nixStable = nixVersions.stable; # Added 2022-01-24