diff --git a/.github/workflows/apple-silicon.yml b/.github/workflows/apple-silicon.yml
new file mode 100644
index 0000000..7dcc685
--- /dev/null
+++ b/.github/workflows/apple-silicon.yml
@@ -0,0 +1,27 @@
+name: Apple Silicon
+
+on: 
+  push:
+  pull_request:
+    branches: [ main ]
+  schedule:
+    - cron:  '0 0 * * *'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        type: [Debug, Release]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Clone GTest
+        run: git clone https://github.com/google/googletest.git
+      - name: Build and run
+        run: |
+          cd $GITHUB_WORKSPACE
+          mkdir build && cd build
+          cmake  -DCMAKE_BUILD_TYPE=${{ matrix.type }}  ../
+          make -j8
+          ./cppTutorUT
diff --git a/.github/workflows/x86-ubuntu.yml b/.github/workflows/x86-ubuntu.yml
index ff1e98d..91c8624 100644
--- a/.github/workflows/x86-ubuntu.yml
+++ b/.github/workflows/x86-ubuntu.yml
@@ -1,20 +1,33 @@
 name: x86-Ubuntu
 
-on: [push]
+on:
+  push:
+  pull_request:
+    branches: [ main ]
+  schedule:
+    - cron:  '0 0 * * *'
+  workflow_dispatch:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        compiler:
+          - { compiler: GNU,  CC: gcc-10,   CXX: g++-10 }
+          - { compiler: LLVM, CC: clang-10, CXX: clang++-10 }
+        type: [Debug, Release]
     steps:
-      - uses: actions/checkout@v1
-      - name: Build cpp-tutor
+      - uses: actions/checkout@v4
+      - name: Clone GTest
+        run: git clone https://github.com/google/googletest.git
+      - name: Build and run
+        env:
+          CC: ${{ matrix.compiler.CC }}
+          CXX: ${{ matrix.compiler.CXX }}
         run: |
-          # CLONE GTEST
-          git clone https://github.com/google/googletest.git
-          # BUILD CPP-TUTOR
-          mkdir build
-          cd build
-          cmake  -DCMAKE_BUILD_TYPE=Release ../
+          cd $GITHUB_WORKSPACE
+          mkdir build && cd build
+          cmake  -DCMAKE_BUILD_TYPE=${{ matrix.type }}  ../
           make -j8
-          # RUN UNIT TESTS
           ./cppTutorUT
diff --git a/.github/workflows/x86-windows.yml b/.github/workflows/x86-windows.yml
new file mode 100644
index 0000000..7364887
--- /dev/null
+++ b/.github/workflows/x86-windows.yml
@@ -0,0 +1,29 @@
+name: x86-Windows
+
+on:
+  push:
+  pull_request:
+    branches: [ main ]
+  schedule:
+    - cron:  '0 0 * * *'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        type: [Debug, Release]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Clone GTest
+        run: git clone https://github.com/google/googletest.git
+      - name: Build and run
+        run: |
+          cd $GITHUB_WORKSPACE
+          mkdir build
+          cmake  -S . -B build/ -DCMAKE_BUILD_TYPE=${{ matrix.type }}  ..\
+          cmake --build .
+          cd .\build
+          ls
+          cppTutorUT
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 72ed4fa..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-dist: Bionic
-language: cpp
-
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - g++-7
-
-matrix:
-  include:
-  - os: linux
-    env:
-    - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
-  - os: linux
-    env:
-      # The version of clang available in Ubuntu Xenial is clang-7. There's a
-      # clang-7 symlink (that points to clang), so the version of the C
-      # compiler can be set with the CC env variable. However, there's no
-      # clang++-7 symlink, which means that it's impossible to use the CXX env
-      # variable to force the clang++ version. As a result, simply use system
-      # clang and clang++ binaries that are known to correspond to clang-7.
-    - MATRIX_EVAL="CC=clang && CXX=clang++"
-  - os: osx
-    osx_image: xcode10.1
-
-before_install:
-- eval "${MATRIX_EVAL}"
-
-script:
-  # CLONE GTEST
-  - git clone https://github.com/google/googletest.git
-  # BUILD CPP-TUTOR
-  - mkdir build
-  - cd build
-  - cmake  -DCMAKE_BUILD_TYPE=Release ../
-  - make -j8
-  # RUN UNIT TESTS
-  - ./cppTutorUT
diff --git a/README.md b/README.md
index a143a6e..3eeba97 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 cpp-tutor
 =========
-[![Build Status](https://travis-ci.org/banach-space/cpp-tutor.svg?branch=master)](https://travis-ci.org/banach-space/cpp-tutor)
-[![Build status](https://ci.appveyor.com/api/projects/status/axf91gjs67eoms4s/branch/add_appveyor?svg=true)](https://ci.appveyor.com/project/banach-space/cpp-tutor/branch/add_appveyor)
-[![Build Status](https://github.com/banach-space/cpp-tutor/workflows/x86/badge.svg)](https://github.com/banach-space/cpp-tutor/actions?query=workflow%3Ax86)
+[![Apple Silicon](https://github.com/banach-space/cpp-tutor/actions/workflows/apple-silicon.yml/badge.svg)](https://github.com/banach-space/cpp-tutor/actions/workflows/apple-silicon.yml)
+[![x86-Ubuntu](https://github.com/banach-space/cpp-tutor/actions/workflows/x86-ubuntu.yml/badge.svg)](https://github.com/banach-space/cpp-tutor/actions/workflows/x86-ubuntu.yml)
 
 Code examples for tutoring modern C++.
 
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 6c154ed..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-version: '1.0.{build}'
-
-platform:
-  - x64
-
-clone_folder: c:\projects\cpp-tutor
-image:
-- Visual Studio 2017
- 
-configuration:
-  - Release
-
-environment:
-  matrix:
-  - arch: Win64
-matrix:
-  fast_finish: true
-
-init:
-- set arch=
-- if "%arch%"=="Win64" ( set arch= Win64)
-- echo %arch%
-- echo %APPVEYOR_BUILD_WORKER_IMAGE%
-- if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" ( set generator="Visual Studio 15 2017%arch%" )
-- if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" ( set generator="Visual Studio 14 2015%arch%" )
-- if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2013" ( set generator="Visual Studio 12 2013%arch%" )
-- echo %generator%
-
-before_build:
-- cmd: |-
-    git clone https://github.com/google/googletest.git
-    mkdir _build
-    cd _build
-    cmake --version
-    cmake ../ -G %generator%
-    dir
-
-build:
-  project: $(APPVEYOR_BUILD_FOLDER)\_build\cpp-tutor.sln
-  verbosity: minimal
-  parallel: true
-
-test_script:
-  - '%APPVEYOR_BUILD_FOLDER%\_build\%CONFIGURATION%\cppTutorUT.exe'