diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index bd50f7f0..00000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,104 +0,0 @@
-# If branch from same repo is on a PR, don't build both :)
-skip_branch_with_pr: true
-image: Visual Studio 2017
-clone_folder: C:\projects\exhale
-
-# See: https://packaging.python.org/guides/supporting-windows-using-appveyor/
-environment:
-  matrix:
-    - PYTHON:    "C:\\Python27"
-      TEST_NAME: "win32_py27"
-      SPHINX_VERSION: "1.8.5"
-      BREATHE_VERSION: "4.12.0"
-    - PYTHON:    "C:\\Python27-x64"
-      TEST_NAME: "win64_py27"
-      SPHINX_VERSION: "1.8.5"
-      BREATHE_VERSION: "4.12.0"
-    # Use latest sphinx / breathe (see also: tox.ini)
-    - PYTHON:    "C:\\Python36-x64"
-      TEST_NAME: "win64_py36"
-    - PYTHON:    "C:\\Python36-x64"
-      TEST_NAME: "win64_cxx"
-
-install:
-  - ps: |
-      # Make it so codecov etc can be found
-      $env:Path += ";" + $env:PYTHON + "\\Scripts"
-
-      # install python tests dependencies: doxygen, pip, tox, codecov
-      if ($env:TEST_NAME -Match "py") {
-        $pip_exec = $env:PYTHON + "\\python.exe"
-        $pip_args = "-m", "pip", "install", "--no-warn-script-location", "-U", "pip", "tox", "codecov"
-        & $pip_exec $pip_args
-
-        # Fetch the pre-compiled binary release for doxygen directly.
-        mkdir doxygen
-        cd doxygen
-        $doxy_src = "https://sourceforge.net/projects/doxygen/files/rel-1.8.15/doxygen-1.8.15.windows.x64.bin.zip"
-        $doxy_dst = "c:\projects\exhale\doxygen\doxygen-1.8.15.windows.x64.bin.zip"
-        # Needs -UserAgent "NativeHost" to follow sourceforge redirects
-        Invoke-WebRequest -Uri $doxy_src -OutFile $doxy_dst -UserAgent "NativeHost"
-        # Extracts `doxygen.exe`, `doxyindexer.exe`, `doxysearch.cgi.exe`, and
-        # `libclang.dll` to same directory aka c:\projects\exhale\doxygen\doxygen.exe
-        # is what we want to use.
-        7z x doxygen-1.8.15.windows.x64.bin.zip
-        $env:Path += ";c:\projects\exhale\doxygen"
-      }
-      # install cxx tests dependencies: pip, codecov, opencppcoverage
-      else {
-        $pip_exec = $env:PYTHON + "\\python.exe"
-        $pip_args = "-m", "pip", "install", "--no-warn-script-location", "-U", "pip", "codecov"
-        & $pip_exec $pip_args
-
-        choco install --no-progress opencppcoverage
-        $env:Path += ";" + "C:\Program Files\OpenCppCoverage"
-      }
-
-build: off
-
-test_script:
-  - ps: |
-      if ($env:TEST_NAME -Match "py") {
-        # Prints setuptools version
-        easy_install --version
-
-        # Print doxygen version
-        Write-Host "Doxygen version:"
-        doxygen --version
-
-        # Installs dependencies and runs the tests.
-        $tox_exec = $env:PYTHON + "\\Scripts\\tox"
-        $tox_args = "-e", "py", "--", "--cov-report", "xml:coverage.xml", "--cov"
-        & $tox_exec $tox_args
-      }
-      else {
-        cd testing\projects
-        mkdir build
-        cd build
-        cmake -G "Visual Studio 15 2017" ..
-        cmake --build .
-        cmake --build . --target coverage-xml
-      }
-
-# Why use Invoke-Expression like this?  Because I keep getting
-#
-#   codecov : The filename, directory name, or volume label syntax is incorrect.
-#
-# Which reports the build as failed, but Invoke-Expression always succeeds xD
-after_test:
-  - ps: |
-      if ($env:TEST_NAME -Match "cxx") {
-        # Gerrymander generated coverage report to include paths from the repository
-        # root (rather than let AppVeyor build folder paths leak in).
-        # Take note of two things: (1) no C:\\ at beginning, and (2) clone_folder above
-        (Get-Content .\coverage.xml) -replace '(.*)filename=\"projects\\exhale\\(.*)\"(.*)', '$1 filename="$2"$3' | Set-Content .\coverage.xml
-        Copy-Item .\coverage.xml -Destination C:\projects\exhale
-        cd C:\projects\exhale
-
-        $codecov_cmd = '& codecov -X gcov -f .\coverage.xml --name ' + $env:TEST_NAME
-        Invoke-Expression $codecov_cmd
-      }
-      else {
-        $codecov_cmd = '& codecov -X gcov -f c:\projects\exhale\coverage.xml --name ' + $env:TEST_NAME
-        Invoke-Expression $codecov_cmd
-      }
diff --git a/.github/workflows/test_extras.yaml b/.github/workflows/test_extras.yaml
new file mode 100644
index 00000000..c8c317d6
--- /dev/null
+++ b/.github/workflows/test_extras.yaml
@@ -0,0 +1,71 @@
+name: Test Extras
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build_docs:
+    name: Docs
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Install Tools
+        run: |
+          pip install -U tox
+          sudo apt-get install -y graphviz
+      - name: Install Tools
+        run: pip install -U tox
+      - name: Test Docs
+        run: |
+          tox -e docs
+
+  build_linkcheck:
+    name: Linkcheck
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Install Tools
+        run: |
+          pip install -U tox
+          sudo apt-get install -y graphviz
+      - name: Test Linkcheck
+        run: |
+          tox -e linkcheck
+
+  build_flake8:
+    name: Flake8
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Install Tools
+        run: |
+          pip install -U tox
+          sudo apt-get install -y graphviz
+      - name: Test Flake8
+        run: |
+          tox -e flake8
diff --git a/.github/workflows/test_python.yaml b/.github/workflows/test_python.yaml
new file mode 100644
index 00000000..dd387327
--- /dev/null
+++ b/.github/workflows/test_python.yaml
@@ -0,0 +1,141 @@
+name: Test Python
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v2
+      ##########################################################################
+      - name: Install Doxygen (macOS)
+        if: contains(matrix.os, 'macos')
+        run: |
+          brew tap-new $USER/local-doxygen
+          brew extract --version=1.8.20 doxygen $USER/local-doxygen
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install -v doxygen@1.8.20
+      - name: Install Doxygen (Ubuntu)
+        if: contains(matrix.os, 'ubuntu')
+        run: |
+          sudo apt-get install -y doxygen
+      - name: Install Doxygen (Windows)
+        if: contains(matrix.os, 'windows')
+        run: |
+          choco install doxygen.install --version 1.8.20
+          echo "C:\Program Files\doxygen\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+      ##########################################################################
+      - name: Doxygen Version Dump
+        run: doxygen --version
+      ##########################################################################
+      - name: Use Python 2.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 2.7
+      - name: Install Python Tools
+        run: pip install -U tox codecov coverage
+      - name: Test Python 2.7
+        env:
+          SPHINX_VERSION: '==1.8.5'
+          BREATHE_VERSION: '==4.12.0'
+        run: tox -e py -- --cov-report xml:coverage.xml --cov
+      - name: Upload Code Coverage for Python 2.7
+        run: |
+          codecov --required -X gcov -f coverage.xml --name "[GHA] ${{ matrix.os }}-py2.7"
+      - name: Cleanup Python 2.7
+        run: |
+          mv .gitignore nolongerignored
+          git clean -n
+          git clean -f
+          git reset --hard
+      ##########################################################################
+      - name: Use Python 3.6
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.6
+      - name: Install Python Tools
+        run: pip install -U tox codecov coverage
+      - name: Test Python 3.6
+        env:
+          SPHINX_VERSION: '==1.8.5'
+          BREATHE_VERSION: '==4.12.0'
+        run: tox -e py -- --cov-report xml:coverage.xml --cov
+      - name: Upload Code Coverage for Python 3.6
+        run: |
+          codecov --required -X gcov -f coverage.xml --name "[GHA] ${{ matrix.os }}-py3.6"
+      - name: Cleanup Python 3.6
+        run: |
+          mv .gitignore nolongerignored
+          git clean -n
+          git clean -f
+          git reset --hard
+      ##########################################################################
+      - name: Use Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Install Python Tools
+        run: pip install -U tox codecov coverage
+      - name: Test Python 3.7
+        env:
+          SPHINX_VERSION: '==2.0.0'
+          BREATHE_VERSION: '==4.14.0'
+        run: tox -e py -- --cov-report xml:coverage.xml --cov
+      - name: Upload Code Coverage for Python 3.7
+        run: |
+          codecov --required -X gcov -f coverage.xml --name "[GHA] ${{ matrix.os }}-py3.7"
+      - name: Cleanup Python 3.7
+        run: |
+          mv .gitignore nolongerignored
+          git clean -n
+          git clean -f
+          git reset --hard
+      ##########################################################################
+      - name: Use Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Install Python Tools
+        run: pip install -U tox codecov coverage
+      - name: Test Python 3.8
+        env:
+          SPHINX_VERSION: '==3.0.0'
+        run: tox -e py -- --cov-report xml:coverage.xml --cov
+      - name: Upload Code Coverage for Python 3.8
+        run: |
+          codecov --required -X gcov -f coverage.xml --name "[GHA] ${{ matrix.os }}-py3.8"
+      - name: Cleanup Python 3.8
+        run: |
+          mv .gitignore nolongerignored
+          git clean -n
+          git clean -f
+          git reset --hard
+      ##########################################################################
+      - name: Use Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Install Python Tools
+        run: pip install -U tox codecov coverage
+      - name: Test Python 3.9
+        env:
+          SPHINX_VERSION: '>=4.0.0'
+        run: tox -e py -- --cov-report xml:coverage.xml --cov
+      - name: Upload Code Coverage for Python 3.9
+        run: |
+          codecov --required -X gcov -f coverage.xml --name "[GHA] ${{ matrix.os }}-py3.9"
+      - name: Cleanup Python 3.9
+        run: |
+          mv .gitignore nolongerignored
+          git clean -n
+          git clean -f
+          git reset --hard
diff --git a/.github/workflows/testing_projects.yaml b/.github/workflows/testing_projects.yaml
new file mode 100644
index 00000000..d36f445d
--- /dev/null
+++ b/.github/workflows/testing_projects.yaml
@@ -0,0 +1,113 @@
+name: Testing Projects
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build_linux:
+    name: Linux
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install Build Tools
+        run: |
+          pip install -U pip
+          pip install codecov gcovr
+          # cpp_long_names test runs code from testing/tests/cpp_long_names.py,
+          # so we need to install the runtime dependencies of Exhale's Python tests.
+          pip install -r requirements.txt -r requirements-dev.txt
+          sudo apt-get install -y \
+            cmake \
+            gcc \
+            g++ \
+            gfortran \
+            make
+
+      - name: Build Tool Versions
+        run: |
+          gcc --version
+          g++ --version
+          gfortran --version
+          cmake --version
+
+      - name: Build and Upload Coverage
+        run: |
+          cd testing/projects
+          mkdir build
+          cd build
+          cmake ..
+          make -j
+          make coverage-xml
+          codecov -X gcov -f .\coverage.xml --name linux_cxx
+
+  build_windows:
+    name: Windows
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install Build Tools
+        run: |
+          pip install -U pip
+          pip install codecov gcovr
+          # cpp_long_names test runs code from testing/tests/cpp_long_names.py,
+          # so we need to install the runtime dependencies of Exhale's Python tests.
+          pip install -r requirements.txt -r requirements-dev.txt
+
+          choco install opencppcoverage
+          echo "C:\Program Files\OpenCppCoverage" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+
+      - name: Setup Windows Dev Env
+        uses: ilammy/msvc-dev-cmd@v1.9.0
+        with:
+          arch: x64
+
+      - name: Install Ninja
+        uses: seanmiddleditch/gha-setup-ninja@master
+
+      - name: Build Tool Versions
+        run: |
+          cl
+          ninja --version
+          cmake --version
+
+      - name: Build and Upload Coverage
+        run: |
+          cd testing\projects
+          mkdir build
+          cd build
+          cmake .. -G Ninja
+          ninja
+          ninja coverage-xml
+
+          # Gerrymander generated coverage report to include paths from the
+          # repository root (rather than let GitHub Actions build folder paths
+          # leak in -- D:\a\exhale\exhale).
+          (Get-Content .\coverage.xml) -replace '(.*)filename=\"a\\exhale\\exhale\\(.*)\"(.*)', '$1 filename="$2"$3' | Set-Content .\coverage.xml
+          Copy-Item .\coverage.xml -Destination D:\a\exhale\exhale
+          cd D:\a\exhale\exhale
+          type coverage.xml
+
+          $codecov_cmd = '& codecov -X gcov -f .\coverage.xml --name windows_cxx'
+          Invoke-Expression $codecov_cmd
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 80ca5eec..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,164 +0,0 @@
-sudo: false
-
-branches:
-  # Other branches receive a Pull Request build.
-  only:
-    - master
-
-# Sphinx version testing done only on Linux (fastest boot / install times).
-# Each test must specify `python: X.Y` and `env: PY=X.Y SPHINX_VERSION=X.Y.Z`.
-# The `tox.ini` file checks the environment variable `SPHINX_VERSION` as an override
-# available to test against a specific version of Sphinx rather than the latest version.
-# The PY environment variable is just to make the Travis CI user interface a little more
-# straightforward which test is which.  See examples below under matrix:include:.
-linux_specifications: &linux_specs
-  os: linux
-  language: python
-  addons:
-    apt:
-      packages:
-        # The dependencies for compiling doxygen from source.
-        - flex
-        - bison
-  install:
-    # NOTE: doxygen doesn't seem to work with latest cmake // ninja :/
-    - pip install cmake
-    - mkdir doxygen && cd doxygen
-    - curl -LO https://github.com/doxygen/doxygen/archive/Release_1_8_15.tar.gz
-    - tar -xf Release_1_8_15.tar.gz
-    - cd doxygen-Release_1_8_15
-    - mkdir build && cd build
-    - cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../..
-    - make -j
-    - make install
-    - cd $(git rev-parse --show-toplevel)
-    - export PATH="$PWD/doxygen/bin:$PATH"
-    - pip install -U pip setuptools tox codecov
-  script:
-    - doxygen --version
-    - tox -e py -- --cov-report xml:coverage.xml --cov
-  after_success:
-    - codecov -X gcov -f coverage.xml --name "$(echo "linux-py@$PY-sphinx@$SPHINX_VERSION")"
-
-matrix:
-  allow_failures:
-    - env: ALLOW_ME_TO=FAIL
-  include:
-    ####################################################################################
-    # Linux :: Python :: 2.7                                                           #
-    ####################################################################################
-    - <<: *linux_specs
-      python: "2.7"
-      env: PY=2.7 SPHINX_VERSION=1.8.5 BREATHE_VERSION=4.12.0
-    ####################################################################################
-    # Linux :: Python :: 3.6                                                           #
-    ####################################################################################
-    - <<: *linux_specs
-      python: "3.6"
-      env: PY=3.6 SPHINX_VERSION=1.8.5 BREATHE_VERSION=4.12.0
-      # Use latest sphinx / breathe (see also: tox.ini)
-    - <<: *linux_specs
-      python: "3.6"
-      env: PY=3.6
-    ####################################################################################
-    # OSX :: Python :: 2.7                                                             #
-    ####################################################################################
-    - os: osx
-      language: generic
-      env: PY=2.7 SPHINX_VERSION=1.8.5 BREATHE_VERSION=4.12.0 HOMEBREW_NO_AUTO_UPDATE=1
-      before_install:
-        # Something strange about final step of install gives exit code != 1 but the
-        # installation appears to work?
-        - brew install python@2 || true
-      install:
-        - brew install doxygen
-        - /usr/local/bin/pip install -U tox codecov
-      script:
-        - doxygen --version
-        - /usr/local/bin/python2 --version
-        - /usr/local/bin/python2 -m tox -e py -- --cov-report xml:coverage.xml --cov
-      after_success:
-        - codecov -X gcov -f coverage.xml --name osx_py2.7
-    ####################################################################################
-    # OSX :: Python :: 3.6                                                             #
-    ####################################################################################
-    - os: osx
-      language: generic
-      # Use latest sphinx / breathe (see also: tox.ini)
-      env: PY=3.6 HOMEBREW_NO_AUTO_UPDATE=1
-      before_install:
-        - brew upgrade python || true
-      install:
-        - brew install doxygen
-        - /usr/local/bin/pip3 install -U tox codecov
-      script:
-        - doxygen --version
-        - /usr/local/bin/python3 --version
-        - /usr/local/bin/python3 -m tox -e py -- --cov-report xml:coverage.xml --cov
-      after_success:
-        - codecov -X gcov -f coverage.xml --name osx_py3.6
-    ####################################################################################
-    # Flake8                                                                           #
-    ####################################################################################
-    - os: linux
-      language: python
-      env: TEST=flake8
-      python: "3.6"
-      install:
-        - pip install -U tox
-      script:
-        - tox -e flake8
-    ####################################################################################
-    # Docs and Linkcheck                                                               #
-    ####################################################################################
-    - os: linux
-      addons:
-        apt:
-          packages:
-            - graphviz
-      language: python
-      python: "3.6"
-      env: TEST=docs_linkcheck
-      install:
-        - pip install -U tox
-      script:
-        - tox -e docs,linkcheck
-    ####################################################################################
-    # testing/projects Code Validation                                                 #
-    ####################################################################################
-    - os: linux
-      dist: xenial
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - gcc-8
-            - g++-8
-            - gfortran-8
-            - python3
-            - python3-venv
-            - cmake
-      language: cpp  # mostly ;)
-      env: TEST=testing/projects
-      before_install:
-        - export CC=gcc-8
-        - export CXX=g++-8
-        - export FC=gfortran-8
-      install:
-        # I don't want to require sudo because I don't want to wait ;)
-        - python3 -m venv venv
-        - source venv/bin/activate
-        - pip install -U pip codecov gcovr
-        # cpp_long_names test runs code from testing/tests/cpp_long_names.py, so we need
-        # to install the runtime dependencies of Exhale's Python tests.
-        - pip install -r requirements.txt -r requirements-dev.txt
-      script:
-        - cd testing/projects
-        - mkdir build && cd build
-        - cmake --version
-        - cmake ..
-        - make -j
-        - make coverage-xml
-      after_success:
-        - codecov --name linux_cxx
diff --git a/README.rst b/README.rst
index f646ac07..9c1fca19 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,6 @@
 Exhale
 ========================================================================================
-|docs| |pypi| |travis| |appveyor| |coverage| |license|
+|docs| |pypi| |coverage| |license|
 
 .. begin_badges
 
@@ -12,14 +12,6 @@ Exhale
    :alt: Latest Version
    :target: https://badge.fury.io/py/exhale
 
-.. |travis| image:: https://travis-ci.com/svenevs/exhale.svg?branch=master
-   :alt: Travis CI Build Status (Unix, Flake8 and Docs Tests)
-   :target: https://app.travis-ci.com/github/svenevs/exhale
-
-.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/g6ja670b5dgkej7u/branch/master
-   :alt: AppVeyor CI Build Satus (Windows Tests)
-   :target: https://ci.appveyor.com/project/svenevs/exhale
-
 .. |coverage| image:: https://codecov.io/gh/svenevs/exhale/branch/master/graph/badge.svg
    :alt: Code Coverage Report
    :target: https://codecov.io/gh/svenevs/exhale
diff --git a/docs/testing.rst b/docs/testing.rst
index 456a682e..e7d3c24b 100644
--- a/docs/testing.rst
+++ b/docs/testing.rst
@@ -1,6 +1,6 @@
 Testing Suite
 ========================================================================================
-|travis| |appveyor| |coverage|
+|coverage|
 
 .. include:: ../README.rst
    :start-after: begin_badges
diff --git a/docs/testproject.py b/docs/testproject.py
index 414c4a88..365ede5d 100644
--- a/docs/testproject.py
+++ b/docs/testproject.py
@@ -53,6 +53,12 @@ def get_projects_baseurl():
     if https_match:
         user = https_match.groups()[0]
 
+    # HTTPS url as done by GitHub Actions.
+    https_re = r"https://github\.com/(.*)/exhale"  # no .git
+    https_match = re.match(https_re, git_remote_out)
+    if https_match:
+        user = https_match.groups()[0]
+
     # SSH url:   git@github.com:svenevs/exhale.git
     ssh_re   = r"git@github\.com:(.*)/exhale\.git"
     ssh_match = re.match(ssh_re, git_remote_out)