diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index b64ff7cc9013..41da9f819eef 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -9454,6 +9454,12 @@
     githubId = 20391;
     name = "Nahum Shalman";
   };
+  nsnelson = {
+    email = "noah.snelson@protonmail.com";
+    github = "peeley";
+    githubId = 30942198;
+    name = "Noah Snelson";
+  };
   nthorne = {
     email = "notrupertthorne@gmail.com";
     github = "nthorne";
diff --git a/pkgs/applications/misc/selectdefaultapplication/default.nix b/pkgs/applications/misc/selectdefaultapplication/default.nix
new file mode 100644
index 000000000000..39470d2b0edd
--- /dev/null
+++ b/pkgs/applications/misc/selectdefaultapplication/default.nix
@@ -0,0 +1,36 @@
+{ stdenv, lib, fetchFromGitHub, qmake, qtbase, wrapQtAppsHook }:
+
+stdenv.mkDerivation {
+  pname = "selectdefaultapplication";
+  version = "unstable-2021-08-12";
+
+  src = fetchFromGitHub {
+    owner = "sandsmark";
+    repo = "selectdefaultapplication";
+    rev = "c752df6ba8caceeef54bcf6527f1bccc2ca8202a";
+    sha256 = "C/70xpt6RoQNIlAjSJhOCyheolK4Xp6RiSZmeqMP4fw=";
+  };
+
+  nativeBuildInputs = [ qmake wrapQtAppsHook ];
+  buildInputs = [ qtbase ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp selectdefaultapplication $out/bin
+
+    install -Dm644 -t "$out/share/applications" selectdefaultapplication.desktop
+    install -Dm644 -t "$out/share/icons/hicolor/48x48/apps" selectdefaultapplication.png
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "A very simple application that lets you define default applications on Linux in a sane way";
+    homepage = "https://github.com/sandsmark/selectdefaultapplication";
+    maintainers = with maintainers; [ nsnelson ];
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1158084312e2..ffb250238aaa 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10507,6 +10507,8 @@ with pkgs;
 
   seexpr = callPackage ../development/compilers/seexpr { };
 
+  selectdefaultapplication = libsForQt5.callPackage ../applications/misc/selectdefaultapplication { };
+
   semgrep = python3.pkgs.callPackage ../tools/security/semgrep { };
   semgrep-core = callPackage ../tools/security/semgrep/semgrep-core.nix { };