diff --git a/pkgs/by-name/fo/forscape/package.nix b/pkgs/by-name/fo/forscape/package.nix
new file mode 100644
index 000000000000..79925ec2cef2
--- /dev/null
+++ b/pkgs/by-name/fo/forscape/package.nix
@@ -0,0 +1,55 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+
+  # nativeBuildInputs
+  cmake,
+  qt6,
+  python3,
+
+  # buildInputs
+  eigen,
+  parallel-hashmap,
+  readerwriterqueue,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "forscape";
+  version = "0.0.2-unstable-2025-04-28";
+
+  src = fetchFromGitHub {
+    owner = "JohnDTill";
+    repo = "Forscape";
+    rev = "1b6d82cdee7ed1ffeee8adffa56ca2b0a866cb34";
+    hash = "sha256-Ee3SAFZG8I0ZEbggLVViqTYu4SFjNJ62xLcpfLgFlR0=";
+  };
+  cmakeFlags = [
+    "-DUSE_CONAN=OFF"
+  ];
+  # Relative to build directory
+  cmakeDir = "../app";
+
+  nativeBuildInputs = [
+    cmake
+    qt6.wrapQtAppsHook
+    python3
+  ];
+
+  buildInputs = [
+    eigen
+    parallel-hashmap
+    readerwriterqueue
+    qt6.qtbase
+    qt6.qtsvg
+  ];
+
+  meta = {
+    description = "Scientific computing language";
+    homepage = "https://github.com/JohnDTill/Forscape";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ doronbehar ];
+    mainProgram = "Forscape";
+    platforms = lib.platforms.all;
+  };
+})
diff --git a/pkgs/by-name/re/readerwriterqueue/package.nix b/pkgs/by-name/re/readerwriterqueue/package.nix
new file mode 100644
index 000000000000..968702eb3ff8
--- /dev/null
+++ b/pkgs/by-name/re/readerwriterqueue/package.nix
@@ -0,0 +1,32 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  cmake,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "readerwriterqueue";
+  # Not using a stable version since this one produces
+  # readerwriterqueueConfig.cmake needed by dependent packages.
+  version = "1.0.6-2024-07-09";
+
+  src = fetchFromGitHub {
+    owner = "cameron314";
+    repo = "readerwriterqueue";
+    rev = "16b48ae1148284e7b40abf72167206a4390a4592";
+    hash = "sha256-m4cUIXiDFxTguDZ7d0svjlOSkUNYY0bbUp3t7adBwOo=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  meta = {
+    description = "Fast single-producer, single-consumer lock-free queue for C";
+    homepage = "https://github.com/cameron314/readerwriterqueue";
+    license = lib.licenses.bsd2;
+    maintainers = with lib.maintainers; [ doronbehar ];
+    platforms = lib.platforms.all;
+  };
+})