diff --git a/.lgtm.yml b/.lgtm.yml
deleted file mode 100644
index 9dd0f16b6..000000000
--- a/.lgtm.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-extraction:
-  javascript:
-    index:
-      exclude:
-        - src/static/js/vendors
-  python:
-    index:
-      exclude:
-        - /
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index ca8c5380f..000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,145 +0,0 @@
-language: node_js
-
-node_js:
-  - "lts/*"
-
-services:
-  - docker
-
-cache: false
-
-env:
-  global:
-    - secure: "WMGxFkOeTTlhWB+ChMucRtIqVmMbwzYdNHuHQjKCcj8HBEPdZLfCuK/kf4rG\nVLcLQiIsyllqzNhBGVHG1nyqWr0/LTm8JRqSCDDVIhpyzp9KpCJQQJG2Uwjk\n6/HIJJh/wbxsEdLNV2crYU/EiVO3A4Bq0YTHUlbhUqG3mSCr5Ec="
-    - secure: "gejXUAHYscbR6Bodw35XexpToqWkv2ifeECsbeEmjaLkYzXmUUNWJGknKSu7\nEUsSfQV8w+hxApr1Z+jNqk9aX3K1I4btL3cwk2trnNI8XRAvu1c1Iv60eerI\nkE82Rsd5lwUaMEh+/HoL8ztFCZamVndoNgX7HWp5J/NRZZMmh4g="
-
-_set_loglevel_warn: &set_loglevel_warn |
-  sed -e 's/"loglevel":[^,]*/"loglevel": "WARN"/' \
-      settings.json.template >settings.json.template.new &&
-  mv settings.json.template.new settings.json.template
-
-_enable_admin_tests: &enable_admin_tests |
-sed -e 's/"enableAdminUITests": false/"enableAdminUITests": true,\n"users":{"admin":{"password":"changeme","is_admin":true}}/' \
-      settings.json.template >settings.json.template.new &&
-  mv settings.json.template.new settings.json.template
-
-_install_libreoffice: &install_libreoffice >-
-  sudo add-apt-repository -y ppa:libreoffice/ppa &&
-  sudo apt-get update &&
-  sudo apt-get -y install libreoffice libreoffice-pdfimport
-
-# The --legacy-peer-deps flag is required to work around a bug in npm v7:
-# https://github.com/npm/cli/issues/2199
-_install_plugins: &install_plugins >-
-  npm install --no-save --legacy-peer-deps
-  ep_align
-  ep_author_hover
-  ep_cursortrace
-  ep_font_size
-  ep_hash_auth
-  ep_headings2
-  ep_markdown
-  ep_readonly_guest
-  ep_spellcheck
-  ep_subscript_and_superscript
-  ep_table_of_contents
-  ep_set_title_on_pad
-
-jobs:
-  include:
-    # we can only frontend tests from the ether/ organization and not from forks.
-    # To request tests to be run ask a maintainer to fork your repo to ether/
-    - if: fork = false
-      name: "Test the Frontend without Plugins"
-      install:
-        - *set_loglevel_warn
-        - *enable_admin_tests
-        - "src/tests/frontend/travis/sauce_tunnel.sh"
-        - "bin/installDeps.sh"
-        - "export GIT_HASH=$(git rev-parse --verify --short HEAD)"
-      script:
-        - "./src/tests/frontend/travis/runner.sh"
-    - name: "Run the Backend tests without Plugins"
-      install:
-        - *install_libreoffice
-        - *set_loglevel_warn
-        - "bin/installDeps.sh"
-        - "cd src && pnpm install && cd -"
-      script:
-        - "cd src && pnpm test"
-    - name: "Test the Dockerfile"
-      install:
-        - "cd src && pnpm install && cd -"
-      script:
-        - "docker build -t etherpad:test ."
-        - "docker run -d -p 9001:9001 etherpad:test && sleep 3"
-        - "cd src && pnpm run test-container"
-    - name: "Load test Etherpad without Plugins"
-      install:
-        - *set_loglevel_warn
-        - "bin/installDeps.sh"
-        - "cd src && pnpm install && cd -"
-        - "npm install -g etherpad-load-test"
-      script:
-        - "src/tests/frontend/travis/runnerLoadTest.sh"
-    # we can only frontend tests from the ether/ organization and not from forks.
-    # To request tests to be run ask a maintainer to fork your repo to ether/
-    - if: fork = false
-      name: "Test the Frontend Plugins only"
-      install:
-        - *set_loglevel_warn
-        - *enable_admin_tests
-        - "src/tests/frontend/travis/sauce_tunnel.sh"
-        - "bin/installDeps.sh"
-        - "rm src/tests/frontend/specs/*"
-        - *install_plugins
-        - "export GIT_HASH=$(git rev-parse --verify --short HEAD)"
-      script:
-        - "./src/tests/frontend/travis/runner.sh"
-    - name: "Lint test package-lock.json"
-      install:
-        - "npm install lockfile-lint"
-      script:
-        - npx lockfile-lint --path src/package-lock.json --validate-https --allowed-hosts npm
-    - name: "Run the Backend tests with Plugins"
-      install:
-        - *install_libreoffice
-        - *set_loglevel_warn
-        - "bin/installDeps.sh"
-        - *install_plugins
-        - "cd src && pnpm install && cd -"
-      script:
-        - "cd src && pnpm test"
-    - name: "Test the Dockerfile"
-      install:
-        - "cd src && pnpm install && cd -"
-      script:
-        - "docker build -t etherpad:test ."
-        - "docker run -d -p 9001:9001 etherpad:test && sleep 3"
-        - "cd src && pnpm run test-container"
-    - name: "Load test Etherpad with Plugins"
-      install:
-        - *set_loglevel_warn
-        - "bin/installDeps.sh"
-        - *install_plugins
-        - "cd src && npm install && cd -"
-        - "npm install -g etherpad-load-test"
-      script:
-        - "src/tests/frontend/travis/runnerLoadTest.sh"
-    - name: "Test rate limit"
-      install:
-        - "docker network create --subnet=172.23.42.0/16 ep_net"
-        - "docker build -f Dockerfile -t epl-debian-slim ."
-        - "docker build -f src/tests/ratelimit/Dockerfile.nginx -t nginx-latest ."
-        - "docker build -f src/tests/ratelimit/Dockerfile.anotherip -t anotherip ."
-        - "docker run -p 8081:80 --rm --network ep_net --ip 172.23.42.1 -d nginx-latest"
-        - "docker run --name etherpad-docker -p 9000:9001 --rm --network ep_net --ip 172.23.42.2 -e 'TRUST_PROXY=true' epl-debian-slim &"
-        - "docker run --rm --network ep_net --ip 172.23.42.3 --name anotherip -dt anotherip"
-        - "./bin/installDeps.sh"
-      script:
-        - "cd src/tests/ratelimit && bash testlimits.sh"
-
-notifications:
-  irc:
-    channels:
-      - "irc.freenode.org#etherpad-lite-dev"
diff --git a/bin/installOnWindows.bat b/bin/installOnWindows.bat
deleted file mode 100644
index 97cddce24..000000000
--- a/bin/installOnWindows.bat
+++ /dev/null
@@ -1,49 +0,0 @@
-@echo off
-
-:: Change directory to etherpad-lite root
-cd /D "%~dp0\.."
-
-:: Is node installed?
-cmd /C node -e "" || ( echo "Please install node.js ( https://nodejs.org )" && exit /B 1 )
-
-echo _
-echo Ensure that all dependencies are up to date...  If this is the first time you have run Etherpad please be patient.
-
-
-:: Install admin ui only if available
-IF EXIST admin (
- cd /D .\admin
- dir
- cmd /C pnpm i || exit /B 1
- cmd /C pnpm run build || exit /B 1
- cd /D ..
-)
-
-:: Install ui only if available
-IF EXIST ui (
- cd /D .\ui
- dir
- cmd /C pnpm i || exit /B 1
- cmd /C pnpm run build || exit /B 1
- cd /D ..
-)
-
-
-cmd /C pnpm i || exit /B 1
-
-cd /D "%~dp0\.."
-
-echo _
-echo Clearing cache...
-del /S var\minified*
-
-echo _
-echo Setting up settings.json...
-IF NOT EXIST settings.json (
-  echo Can't find settings.json.
-  echo Copying settings.json.template...
-  cmd /C copy settings.json.template settings.json || exit /B 1
-)
-
-echo _
-echo Installed Etherpad!  To run Etherpad type start.bat
diff --git a/doc/plugins.md b/doc/plugins.md
index d90d52895..95fbb9c40 100644
--- a/doc/plugins.md
+++ b/doc/plugins.md
@@ -38,7 +38,7 @@ ep_<plugin>/
  ├ locales/
  │  ├ en.json            ◄─ English (US) strings
  │  └ qqq.json           ◄─ optional hints for translators
- ├ .travis.yml           ◄─ Travis CI config
+ ├ .github/workflows/   ◄─ CI workflows (backend / frontend tests, npm publish)
  ├ LICENSE
  ├ README.md
  ├ ep.json               ◄─ Etherpad plugin definition
diff --git a/start.bat b/start.bat
deleted file mode 100644
index bf8f1b23d..000000000
--- a/start.bat
+++ /dev/null
@@ -1,12 +0,0 @@
-@echo off
-REM Windows and symlinks do not get along with each other, so on Windows
-REM `node_modules\ep_etherpad-lite` is sometimes a full copy of `src` not a
-REM symlink to `src`. If it is a copy, Node.js sees `src\foo.js` and
-REM `node_modules\ep_etherpad-lite\foo.js` as two independent modules with
-REM independent state, when they should be treated as the same file. To work
-REM around this, everything must consistently use either `src` or
-REM `node_modules\ep_etherpad-lite` on Windows. Because some plugins access
-REM Etherpad internals via `require('ep_etherpad-lite/foo')`,
-REM `node_modules\ep_etherpad-lite` is used here.
-cd src
-pnpm run prod