diff --git a/.github/workflows/pull-request-create-release.yml b/.github/workflows/pull-request-create-release.yml
new file mode 100644
index 000000000..e2886057b
--- /dev/null
+++ b/.github/workflows/pull-request-create-release.yml
@@ -0,0 +1,122 @@
+name: Create pull request release
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+jobs:
+  create-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the source code
+        uses: actions/checkout@v4
+
+      - name: Determine the tag
+        run: echo betty_tag=0.0.0+dev-pull-request-${{ github.event.number }} >> $GITHUB_ENV
+        shell: bash
+
+      - name: Create/reassign the tag
+        run: git tag -f '${{ env.betty_tag }}'
+
+      - name: Push the tag
+        run: git push -f origin '${{ env.betty_tag }}'
+
+      - name: Create the pull request release, if it does not exist already
+        run: gh release create '${{ env.betty_tag }}' --prerelease --notes 'This is an unstable development release for https://github.com/bartfeenstra/betty/pull/${{ github.event.number }}. It will be deleted once the pull request is closed.' || true
+        env:
+          GH_TOKEN: ${{ github.token }}
+  build-pyinstaller:
+    needs:
+      - create-release
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - name: macOS
+            os: macos-latest
+            dist_name: betty-macos
+            python: '3.12'
+          - name: Windows
+            os: windows-2019
+            dist_name: betty-windows
+            python: '3.12'
+    steps:
+      - name: Check out the source code
+        uses: actions/checkout@v4
+
+      - name: Determine the tag
+        run: echo betty_tag=0.0.0+dev-pull-request-${{ github.event.number }} >> $GITHUB_ENV
+        shell: bash
+
+      # Ubuntu 20.04 ships with an older pip version.
+      - name: Update pip
+        if: startsWith(runner.os, 'Linux')
+        run: pip install --upgrade pip
+
+      - name: Get the pip cache directory
+        run: echo "pip_cache_dir=$(pip cache dir)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Cache pip
+        uses: actions/cache@v4
+        with:
+          path: ${{ env.pip_cache_dir }}
+          key: pip-${{ runner.os }}-${{ matrix.python }}-${{ hashFiles('./setup.py') }}
+          restore-keys: |
+            pip-${{ runner.os }}-${{ matrix.python }}-
+
+      - name: Get the npm cache directory
+        run: echo "npm_cache_dir=$(npm config get cache)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Cache npm
+        uses: actions/cache@v4
+        with:
+          path: ${{ env.npm_cache_dir }}
+          key: npm-${{ runner.os }}-${{ hashFiles('./package.json') }}
+          restore-keys: |
+            npm-${{ runner.os }}-
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: Build the executable
+        run: ./bin/build-pyinstaller ${{ env.betty_tag }}-${{ github.event.pull_request.head.sha }}
+        shell: bash
+
+      - name: Zip the macOS package
+        if: startsWith(runner.os, 'macOS')
+        run: zip -r -X ./dist/${{ matrix.dist_name }}-${{ github.event.pull_request.head.sha }}.zip ./dist/betty
+        shell: bash
+
+      - name: Zip the Windows package
+        if: startsWith(runner.os, 'Windows')
+        run: Compress-Archive .\dist\betty .\dist\${{ matrix.dist_name }}-${{ github.event.pull_request.head.sha }}.zip
+
+      - name: Publish the package
+        run: gh release upload ${{ env.betty_tag }} ./dist/${{ matrix.dist_name }}-${{ github.event.pull_request.head.sha }}.zip --clobber
+        shell: bash
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  notify:
+    needs:
+      - build-pyinstaller
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the source code
+        uses: actions/checkout@v4
+
+      - name: Determine the tag
+        run: echo betty_tag=0.0.0+dev-pull-request-${{ github.event.number }} >> $GITHUB_ENV
+        shell: bash
+
+      - name: Notify collaborators of the release
+        run: gh pr comment ${{ github.event.pull_request.number }} --body $'Uploaded Betty for commit ${{ github.event.pull_request.head.sha }}. You can download it, test it, and post your feedback in a comment to this pull request 💕\n- [Betty Desktop for **macOS** 🍎](https://github.com/bartfeenstra/betty/releases/download/${{ env.betty_tag }}/betty-macos-${{ github.event.pull_request.head.sha }}.zip)\n- [Betty Desktop for **Windows** 🪟](https://github.com/bartfeenstra/betty/releases/download/${{ env.betty_tag }}/betty-windows-${{ github.event.pull_request.head.sha }}.zip)\n\nThese downloads will stop working when the pull request is closed.'
+        shell: bash
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pull-request-delete-release.yml b/.github/workflows/pull-request-delete-release.yml
new file mode 100644
index 000000000..7c5dfdbdf
--- /dev/null
+++ b/.github/workflows/pull-request-delete-release.yml
@@ -0,0 +1,22 @@
+name: Remove pull request release
+
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  delete-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the source code
+        uses: actions/checkout@v4
+
+      - name: Determine the tag
+        run: echo betty_tag=0.0.0+dev-pull-request-${{ github.event.number }} >> $GITHUB_ENV
+        shell: bash
+
+      - name: Delete the release
+        run: gh release delete '${{ env.betty_tag }}' --cleanup-tag --yes
+        env:
+          GH_TOKEN: ${{ github.token }}