diff --git a/Formula/r/replxx.rb b/Formula/r/replxx.rb
new file mode 100644
index 0000000000000..0bd65eb90a2c7
--- /dev/null
+++ b/Formula/r/replxx.rb
@@ -0,0 +1,36 @@
+class Replxx < Formula
+  desc "Readline and libedit replacement"
+  homepage "https://github.com/AmokHuginnsson/replxx"
+  url "https://github.com/AmokHuginnsson/replxx/archive/refs/tags/release-0.0.4.tar.gz"
+  sha256 "a22988b2184e1d256e2d111b5749e16ffb1accbf757c7b248226d73c426844c4"
+  license all_of: ["BSD-3-Clause", "Unicode-TOU"]
+
+  depends_on "cmake" => :build
+
+  def install
+    system "cmake", "-S", ".", "-B", "build", "-DBUILD_SHARED_LIBS=ON", *std_cmake_args
+    system "cmake", "--build", "build"
+    system "cmake", "--install", "build"
+
+    pkgshare.install "examples"
+  end
+
+  test do
+    cp_r pkgshare/"examples", testpath
+    cd "examples" do
+      system ENV.cc, "-c", "util.c", "-o", "util.o"
+      system ENV.cc, "c-api.c", "util.o", "-L#{lib}", "-I#{include}", "-lreplxx", "-lm", "-o", "test"
+
+      # `test` executable is an interactive program so we use Open3 interact with it
+      Open3.popen3("test") do |stdin, stdout, stderr, _|
+        stdin.puts "hello"
+        output = stdout.gets
+        assert_match "thanks for the input: hello", output if output
+
+        stdin.close # simulate Ctrl+D by closing stdin
+
+        assert_empty stderr.read
+      end
+    end
+  end
+end