diff --git a/Aliases/3mux b/Aliases/3mux
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--- /dev/null
+++ b/Aliases/3mux
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+../Formula/threemux.rb
\ No newline at end of file
diff --git a/Formula/threemux.rb b/Formula/threemux.rb
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+++ b/Formula/threemux.rb
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+class Threemux < Formula
+  desc "Terminal multiplexer inspired by i3"
+  homepage "https://github.com/aaronjanse/3mux"
+  url "https://github.com/aaronjanse/3mux/archive/v1.1.0.tar.gz"
+  sha256 "0f4dae181914c73eaa91bdb21ee0875f21b5da64c7c9d478f6d52a2d0aa2c0ea"
+  license "MIT"
+  head "https://github.com/aaronjanse/3mux.git"
+
+  depends_on "go" => :build
+
+  def install
+    system "go", "build", *std_go_args, "-o", bin/"3mux"
+  end
+
+  test do
+    require "open3"
+
+    Open3.popen2e(bin/"3mux") do |stdin, _, _|
+      stdin.write "brew\n"
+      stdin.write "3mux detach\n"
+    end
+
+    assert_match "Sessions:", pipe_output("#{bin}/3mux ls")
+  end
+end