diff --git a/pkgs/development/interpreters/cg3/default.nix b/pkgs/development/interpreters/cg3/default.nix
new file mode 100644
index 000000000000..27db9bebcd0c
--- /dev/null
+++ b/pkgs/development/interpreters/cg3/default.nix
@@ -0,0 +1,61 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, runCommand
+, dieHook
+, cmake
+, icu
+, boost
+}:
+
+let cg3 = stdenv.mkDerivation rec {
+  pname = "cg3";
+  version = "1.3.7";
+
+  src = fetchFromGitHub {
+    owner = "GrammarSoft";
+    repo = "${pname}";
+    rev = "v${version}";
+    sha256 = "Ena3dGoZsXOIY6mbvnfI0H7QqRifoxWIBKQrK3yQSmY=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  buildInputs = [
+    icu
+    boost
+  ];
+
+  doCheck = true;
+
+  passthru.tests.minimal = runCommand "${pname}-test" {
+      buildInputs = [
+        cg3
+        dieHook
+      ];
+    } ''
+      echo 'DELIMITERS = "."; ADD (tag) (*);' >grammar.cg3
+      printf '"<a>"\n\t"a" tag\n\n' >want.txt
+      printf '"<a>"\n\t"a"\n\n' | vislcg3 -g grammar.cg3 >got.txt
+      diff -s want.txt got.txt || die "Grammar application did not produce expected parse"
+      touch $out
+    '';
+
+
+  # TODO, consider optionals:
+  # - Enable tcmalloc unless darwin?
+  # - Enable python bindings?
+
+  meta = with lib; {
+    homepage = "https://github.com/GrammarSoft/cg3";
+    description = "Constraint Grammar interpreter, compiler and applicator vislcg3";
+    maintainers = with maintainers; [ unhammer ];
+    license = licenses.gpl3Plus;
+    platforms = platforms.all;
+  };
+};
+
+in
+  cg3
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 19d7b5f54c77..006c54fbb4b3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14587,6 +14587,8 @@ with pkgs;
 
   ceptre = callPackage ../development/interpreters/ceptre { };
 
+  cg3 = callPackage ../development/interpreters/cg3 { };
+
   cling = callPackage ../development/interpreters/cling { };
 
   clips = callPackage ../development/interpreters/clips { };