diff --git a/pkgs/applications/misc/OSCAR/default.nix b/pkgs/applications/misc/OSCAR/default.nix
new file mode 100644
index 000000000000..e619ad8c6971
--- /dev/null
+++ b/pkgs/applications/misc/OSCAR/default.nix
@@ -0,0 +1,46 @@
+{ stdenv, mkDerivation, fetchFromGitLab, qmake, qtbase, qttools, qtserialport, libGLU }:
+mkDerivation rec {
+  pname = "OSCAR";
+  version = "1.2.0";
+
+  src = fetchFromGitLab {
+    owner = "pholy";
+    repo = "OSCAR-code";
+    rev = "v${version}";
+    sha256 = "10r37d8c2avr167n2s9lhld1c9hmckm444fq163z1jsy9jpid6mg";
+  };
+
+  buildInputs = [ qtbase qttools qtserialport libGLU ];
+  nativeBuildInputs = [ qmake ];
+  postPatch = ''
+    substituteInPlace oscar/oscar.pro --replace "/bin/bash" "${stdenv.shell}"
+  '';
+
+  qmakeFlags = [ "OSCAR_QT.pro" ];
+
+  installPhase = ''
+    install -d $out/bin
+    install -d $out/share/OSCAR/Help
+    install -d $out/share/OSCAR/Html
+    install -d $out/share/OSCAR/Translations
+    install -d $out/share/icons/OSCAR
+    install -d $out/share/applications
+    install -T oscar/OSCAR $out/bin/OSCAR
+    # help browser was removed 'temporarily' in https://gitlab.com/pholy/OSCAR-code/-/commit/57c3e4c33ccdd2d0eddedbc24c0e4f2969da3841
+    # install oscar/Help/* $out/share/OSCAR/Help
+    install oscar/Html/* $out/share/OSCAR/Html
+    install oscar/Translations/* $out/share/OSCAR/Translations
+    install -T Building/Linux/OSCAR.png $out/share/icons/OSCAR/OSCAR.png
+    install -T Building/Linux/OSCAR.desktop $out/share/applications/OSCAR.desktop
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "https://www.sleepfiles.com/OSCAR/";
+    description = "Software for reviewing and exploring data produced by CPAP and related machines used in the treatment of sleep apnea";
+    license = licenses.gpl3;
+    maintainers = [ maintainers.roconnor ];
+    # Someone needs to create a suitable installPhase for Darwin and Windows.
+    # See https://gitlab.com/pholy/OSCAR-code/-/tree/master/Building.
+    broken = !stdenv.hostPlatform.isLinux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 04e0f41e13ee..466dc88e05f1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -27196,6 +27196,8 @@ in
 
   opkg-utils = callPackage ../tools/package-management/opkg-utils { };
 
+  OSCAR = qt5.callPackage ../applications/misc/OSCAR { };
+
   pgmanage = callPackage ../applications/misc/pgmanage { };
 
   pgadmin = callPackage ../applications/misc/pgadmin {