diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..897549a
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,26 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  install:
+
+    strategy:
+      matrix:
+        os: [ macos-10.15 ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Copy formulae
+      run: cp *.rb $(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/
+    - name: Install
+      # We install the IIO Oscilloscope package, which builds the others
+      # through dependency resolution.
+      run: brew install --verbose --build-from-source iio-oscilloscope
+    - name: Test
+      run: |
+        for formula in *.rb; do
+          brew test "${formula%.rb}"
+        done
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index eb7a78d..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-language: c
-os: osx
-osx_image: xcode10.1
-
-before_install:
-  - brew unlink python@2
-  - brew update >/dev/null
-  - curl -O http://swdownloads.analog.com/cse/travis_builds/master_latest_libiio-darwin-10.13.6.pkg
-  - sudo installer -store -verbose -pkg master_latest_libiio-darwin-10.13.6.pkg -target /
-  - curl -O http://swdownloads.analog.com/cse/travis_builds/master_latest_libad9361-iio-osx_10.12.pkg
-  - sudo installer -store -verbose -pkg master_latest_libad9361-iio-osx_10.12.pkg -target /
-
-jobs:
-  include:
-    - stage: "Tests"
-      name: "Release"
-      script: brew install -v --build-from-source ./i-i-o-oscilloscope.rb
-    - stage: "Tests"
-      name: "Master"
-      script: brew install -v --HEAD --build-from-source ./i-i-o-oscilloscope.rb
diff --git a/i-i-o-oscilloscope.rb b/i-i-o-oscilloscope.rb
deleted file mode 100644
index 1dd89d2..0000000
--- a/i-i-o-oscilloscope.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-
-class IIOOscilloscope < Formula
-
-  desc "IIO Oscilloscope"
-  homepage "https://github.com/analogdevicesinc/iio-oscilloscope/wiki"
-  url "https://github.com/analogdevicesinc/iio-oscilloscope/archive/v0.10-master.tar.gz"
-  sha256 "45feffd087f2bb53b9b9d1e2fa00e7423e94f024c8adc5cedc8f145ff3afb4ea"
-  head "https://github.com/analogdevicesinc/iio-oscilloscope.git"
-
-  depends_on "libusb"
-  depends_on "cmake" => :build
-  depends_on "gtk+" => :build
-  depends_on "glib" => :build
-  depends_on "cairo" => :build
-  depends_on "pixman" => :build
-  depends_on "fontconfig" => :build
-  depends_on "freetype" => :build
-  depends_on "libpng" => :build
-  depends_on "pango" => :build
-  depends_on "fribidi" => :build
-  depends_on "atk" => :build
-  depends_on "gdk-pixbuf" => :build
-  depends_on "gtkdatabox" => :build
-  depends_on "fftw" => :build
-  depends_on "curl" => :build
-  depends_on "jansson" => :build
-  depends_on "libxml2" => :build
-  depends_on "pkg-config" => :build
-  depends_on "libmatio" => :build
-  depends_on "gettext" => :build
-  depends_on "harfbuzz" => :build
-  depends_on "graphite2" => :build
-  depends_on "libffi" => :build
-
-  def install
-    ENV.deparallelize
-    system "cmake ./CMakeLists.txt -DCMAKE_INSTALL_PREFIX='#{prefix}'"
-    system "make", "install"
-  end
-
-  test do
-    system "false"
-  end
-
-end
diff --git a/iio-oscilloscope.rb b/iio-oscilloscope.rb
new file mode 100644
index 0000000..469d225
--- /dev/null
+++ b/iio-oscilloscope.rb
@@ -0,0 +1,42 @@
+class IioOscilloscope < Formula
+  desc "GTK+ based oscilloscope application for interfacing with various IIO devices"
+  homepage "https://wiki.analog.com/resources/tools-software/linux-software/iio_oscilloscope"
+  url "https://github.com/analogdevicesinc/iio-oscilloscope/archive/v0.11-master.tar.gz"
+  sha256 "df31ae208f806f8291c3d4fd53d57d2e54acff4ab65c5ae52c18730fc76c6e64"
+  license "GPL-2.0"
+  head "https://github.com/analogdevicesinc/iio-oscilloscope.git"
+
+  depends_on "cmake" => :build
+  depends_on "pkg-config" => :build
+
+  depends_on "atk"
+  depends_on "cairo"
+  depends_on "curl"
+  depends_on "fftw"
+  depends_on "gdk-pixbuf"
+  depends_on "gettext"
+  depends_on "glib"
+  depends_on "gtk+"
+  depends_on "gtkdatabox"
+  depends_on "harfbuzz"
+  depends_on "jansson"
+  depends_on "libad9361-iio"
+  depends_on "libiio"
+  depends_on "libmatio"
+  depends_on "libserialport"
+  depends_on "pango"
+
+  uses_from_macos "libxml2"
+
+  def install
+    mkdir "build" do
+      system "cmake", "..", *std_cmake_args
+      system "make", "install"
+    end
+  end
+
+  test do
+    assert_match "osc: the IIO visualization and control tool",
+      shell_output("#{bin}/osc --help", 255)
+  end
+end
diff --git a/libad9361-iio.rb b/libad9361-iio.rb
index 7a860a0..e26bd06 100644
--- a/libad9361-iio.rb
+++ b/libad9361-iio.rb
@@ -1,19 +1,32 @@
 class Libad9361Iio < Formula
-  desc ""
-  homepage ""
+  desc "IIO AD9361 library for filter design and handling, multi-chip sync, etc."
+  homepage "https://analogdevicesinc.github.io/libad9361-iio/"
+  url "https://github.com/analogdevicesinc/libad9361-iio/archive/v0.2.tar.gz"
+  sha256 "f0d935eb7f70fde8596d98e9eb1f311b408b87662fc1fff45ae3ed455697b747"
+  license "LGPL-2.1"
   head "https://github.com/analogdevicesinc/libad9361-iio.git"
 
   depends_on "cmake" => :build
   depends_on "pkg-config" => :build
 
+  depends_on "libiio"
 
   def install
-    # ENV.deparallelize  # if your formula fails when building in parallel
-    system "cmake ./CMakeLists.txt -DCMAKE_INSTALL_PREFIX='#{prefix}'"
-    system "make", "install" # if this fails, try separate make/make install steps
+    mkdir "build" do
+      cmake_args = [
+        "-DOSX_PACKAGE=OFF",
+      ]
+      system "cmake", "..", *cmake_args, *std_cmake_args
+      system "make"
+      system "make", "install"
+    end
+
+    # For some reason they install a framework in lib/
+    frameworks.install_symlink lib/"ad9361.framework"
   end
 
   test do
-    system "false"
+    assert_match "ad9361_fmcomms5_phase_sync",
+      shell_output("nm #{frameworks}/ad9361.framework/ad9361")
   end
 end
diff --git a/libiio.rb b/libiio.rb
index d3a4534..82cc672 100644
--- a/libiio.rb
+++ b/libiio.rb
@@ -1,32 +1,35 @@
-
 class Libiio < Formula
-  desc "libIIO"
-  homepage "https://github.com/analogdevicesinc/iio-oscilloscope/wiki"
-#  head "https://github.com/analogdevicesinc/libiio.git"
-  url "https://github.com/analogdevicesinc/libiio/archive/v0.17.tar.gz"
+  desc "Library for interfacing with local and remote Linux IIO devices"
+  homepage "https://analogdevicesinc.github.io/libiio/"
+  url "https://github.com/analogdevicesinc/libiio/archive/v0.21.tar.gz"
+  sha256 "03d13165cbeb83b036743cbd9a10e336c728da162714f39d13250a3d94305cac"
+  license "LGPL-2.1"
+  head "https://github.com/analogdevicesinc/libiio.git"
 
-  # libusb libxml2
   depends_on "cmake" => :build
-#  depends_on "gtk+" => :build
-#  depends_on "glib" => :build
-#  depends_on "libcdk5-dev" => :build
-#  depends_on "bison" => :build
-#  depends_on "flex" => :build
-  depends_on "doxygen" => build
-  depends_on "libxml2" => :build
-  depends_on "libusb" => :build
+
+  depends_on "libserialport"
+  depends_on "libusb"
+
+  uses_from_macos "libxml2"
 
   def install
-    ENV.deparallelize  # if your formula fails when building in parallel
-    system "mkdir build"
-    system "cd build"
-    system "pwd"
-    system "cmake .."
-    system "make"
-    #system "make","DESTDIR=#{prefix}","install-common-files"
+    mkdir "build" do
+      cmake_args = [
+        "-DOSX_INSTALL_FRAMEWORKSDIR=#{frameworks}",
+        "-DOSX_PACKAGE=OFF",
+      ]
+      system "cmake", "..", *cmake_args, *std_cmake_args
+      system "make"
+      system "make", "install"
+    end
+
+    Dir.glob("#{frameworks}/iio.framework/Tools/*").each do |exec|
+      bin.install_symlink exec if File.executable?(exec)
+    end
   end
 
   test do
-    system "false"
+    system "#{bin}/iio_info", "--help"
   end
 end