diff --git a/Aliases/7-zip b/Aliases/7-zip
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index 00000000000..3aebe4b978f
--- /dev/null
+++ b/Aliases/7-zip
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+../Formula/sevenzip.rb
\ No newline at end of file
diff --git a/Aliases/7zip b/Aliases/7zip
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+++ b/Aliases/7zip
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+../Formula/sevenzip.rb
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diff --git a/Formula/sevenzip.rb b/Formula/sevenzip.rb
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+++ b/Formula/sevenzip.rb
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+class Sevenzip < Formula
+  desc "7-Zip is a file archiver with a high compression ratio"
+  homepage "https://7-zip.org"
+  url "https://7-zip.org/a/7z2106-src.7z"
+  version "21.06"
+  sha256 "675eaa90de3c6a3cd69f567bba4faaea309199ca75a6ad12bac731dcdae717ac"
+  license all_of: ["LGPL-2.1-or-later", "BSD-3-Clause"]
+
+  def install
+    cd "CPP/7zip/Bundles/Alone2" do
+      mac_suffix = Hardware::CPU.intel? ? "x64" : Hardware::CPU.arch
+      mk_suffix, directory = if OS.mac?
+        ["mac_#{mac_suffix}", "m_#{mac_suffix}"]
+      else
+        ["gcc", "g"]
+      end
+
+      system "make", "-f", "../../cmpl_#{mk_suffix}.mak"
+
+      # Cherry pick the binary manually. This should be changed to something
+      # like `make install' if the upstream adds an install target.
+      # See: https://sourceforge.net/p/sevenzip/discussion/45797/thread/1d5b04f2f1/
+      bin.install "b/#{directory}/7zz"
+    end
+  end
+
+  test do
+    (testpath/"foo.txt").write("hello world!\n")
+    system bin/"7zz", "a", "-t7z", "foo.7z", "foo.txt"
+    system bin/"7zz", "e", "foo.7z", "-oout"
+    assert_equal "hello world!\n", (testpath/"out/foo.txt").read
+  end
+end