diff --git a/.editorconfig b/.editorconfig
deleted file mode 100644
index 7d7ecd99..00000000
--- a/.editorconfig
+++ /dev/null
@@ -1,13 +0,0 @@
-# EditorConfig is awesome: http://EditorConfig.org
-
-# top-most EditorConfig file
-root = true
-
-# Unix-style newlines with a newline ending every file
-[*]
-end_of_line = lf
-insert_final_newline = true
-
-# Tab indentation (no size specified)
-[*.cpp,*.h]
-indent_style = space
diff --git a/.travis_inactive.yml b/.travis_inactive.yml
deleted file mode 100644
index b46b6a62..00000000
--- a/.travis_inactive.yml
+++ /dev/null
@@ -1,70 +0,0 @@
-language: cpp
-dist: bionic
-
-addons:
-  apt:
-    packages:
-    - qtbase5-dev
-    - qttools5-dev
-    - libqt5opengl5-dev
-    - libusb-1.0-0-dev
-    - libfftw3-dev
-    - binutils-dev
-    - rpm
-
-matrix:
-  include:
-    - compiler: gcc
-      env: CMAKE_CXX_COMPILER=/usr/bin/g++
-      os: linux
-
-before_install:
-    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
-          brew update; brew install qt5 fftw binutils create-dmg ;
-          export CMAKE_PREFIX_PATH=$(brew --prefix qt5) ;
-          echo "CMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}" ;
-      fi
-    - if [[ "$TRAVIS_OS_NAME" != "osx" ]]; then pip install cmake --user; fi
-
-before_script:
-    - mkdir build
-    - cd build
-    - cmake -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} ../
-
-script:
-    - make -j4 # create either a bin or a bundle (.app) - depending on openhantek/CMakeLists.txt
-    - sudo make -j4 package # simply pack the binary, otherwise populate the bundle below
-    - if test -d openhantek/OpenHantek.app; then
-          export PATH=${CMAKE_PREFIX_PATH}/bin:${PATH} ;
-          cd openhantek ;
-          macdeployqt OpenHantek.app -always-overwrite -verbose=1 ;
-          python ../../utils/macdeployqtfix/macdeployqtfix.py OpenHantek.app/Contents/MacOS/OpenHantek ${CMAKE_PREFIX_PATH} ;
-          create-dmg --volname OpenHantek --volicon ../../openhantek/res/images/openhantek.icns --window-pos 200 120 --window-size 800 400 --icon-size 100 --icon "OpenHantek.app" 200 190 --skip-jenkins --hide-extension "OpenHantek.app" --app-drop-link 600 185 --eula ../../LICENSE OpenHantek.dmg OpenHantek.app ;
-          cd .. ;
-      else
-          # ls -l packages ;
-          true;
-      fi
-    - ls -l openhantek || true
-
-before_deploy:
-    - if test -d openhantek/OpenHantek.app; then
-          cd openhantek ;
-          sudo tar -cvzf ../packages/openhantek_*_osx_*.tar.gz OpenHantek.app ;
-          if test -f OpenHantek.dmg ; then
-            sudo mv OpenHantek.dmg ../packages/$(basename ../packages/openhantek_*_osx_*.tar.gz .tar.gz).dmg ;
-          fi ;
-          cd .. ;
-      else
-          true;
-      fi
-    - ls -l packages || true
-
-deploy:
-  provider: releases
-  api_key: $GITHUB_TOKEN
-  file_glob: true
-  file: packages/*
-  skip_cleanup: true
-  on:
-    tags: true
diff --git a/appveyor_inactive.yml b/appveyor_inactive.yml
deleted file mode 100644
index 9179e45f..00000000
--- a/appveyor_inactive.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-version: 1.0.{build}
-
-# This file defines all the magic to test the build on every push to GitHub with the help of appveyor.com
-# We use different (virtual) build environments that work sequentially and provide their artifacts.
-# The artifacts of every push/build are available in appveyor for 6 months from build.
-# Artifacts of tagged pushes ("unstable" or release number) are deployed into the GitHub release.
-
-# define the build environments
-# move Ubuntu / macOS from appveyor to the faster GitHub hosted runners
-
-image:
-  - Visual Studio 2019
-
-
-# Build Windows packages
-before_build:
-  - set qtpath64="C:\Qt\5.15\msvc2019_64"
-  - set arch64=x64
-  - set dir64=build_x64
-  - md build_x64
-  - call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"
-  - cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_PREFIX_PATH=%qtpath64% -DCMAKE_BUILD_TYPE=Release -Bbuild_x64 -H.
-
-build_script:
-  - cmake --build build_x64 --config Release --target package
-
-artifacts:
-  - path: build_x64\openhantek\Release
-    name: OpenHantek-Win-x64-Release-b$(APPVEYOR_BUILD_NUMBER)
-
-
-# Upload all packages to GitHub, but only if the push was tagged
-deploy:
-- provider: GitHub
-  tag: $(APPVEYOR_REPO_TAG_NAME)
-  auth_token:
-    secure: 4TSFa7zTbxPVDkS9pGWO0BIPD9r2NnnHGe03pg5rjEuvSH5pntkmMdLM7MePJLma
-  artifact: /.*\.deb/, /.*\.rpm/, /.*\.tar.gz/, /.*\.zip/, /.*\.dmg/
-  prerelease: true
-  force_update: true
-  on:
-    APPVEYOR_REPO_TAG: true