...
django-appconf (https://openedx.atlassian.net/browse/BOM-1202)
django-cors-headers
django-crispy-forms
django-crum
django-debug-toolbar
django-extensions (https://openedx.atlassian.net/browse/BOM-1196)
django-filter (https://openedx.atlassian.net/browse/BOM-1204)
django-libsass (https://openedx.atlassian.net/browse/BOM-1218)
django-model-utils
django-oscar (https://openedx.atlassian.net/browse/BOM-1195)
django-simple-history
django-solo (not claimed or tested, but issue discussions indicate it works)
django-treebeard (https://openedx.atlassian.net/browse/BOM-1200)
django-waffle (https://openedx.atlassian.net/browse/BOM-1199)
django-webtest
django-widget-tweaks
django_compressor
djangorestframework (https://openedx.atlassian.net/browse/BOM-1318)
djangorestframework-csv
djangorestframework-datatables
drf-jwt
edx-auth-backends (https://openedx.atlassian.net/browse/BOM-1164)
edx-django-release-util
edx-django-sites-extensions
edx-django-utils
edx-drf-extensions (https://openedx.atlassian.net/browse/BOM-1045)
edx-i18n-tools
edx-opaque-keys
jsonfield2 (https://openedx.atlassian.net/browse/BOM-1217)
pytest-django
social-auth-app-django (https://openedx.atlassian.net/browse/BOM-1216)
sorl-thumbnail (https://openedx.atlassian.net/browse/BOM-1203)
xss-utils (https://openedx.atlassian.net/browse/BOM-1197)
Newer versions available on PyPI which support Django 2.2
django-extra-views (current version is controlled used by a django-oscar )django-oscar (https://openedx.atlassian.net/browse/BOM-1195release tested with 2.2, should be ok)
django-phonenumber-field (current version is controlled used by a django-oscar release tested with 2.2, should be ok)
django-tables2 (https://openedx.atlassian.net/browse/BOM-1319)sorl-thumbnail current version used by a django-oscar release tested with 2.2, should be ok)
edx-rbac (https://openedx.atlassian.net/browse/BOM-12031042)
Support for Django 2.2 on master but not PyPI
factory-boy (supports 2.1 in installed version, may just work)
To be updated for Django 2.2 support
Haven't been tested with Django 2.2 upstream
...