Redis Sentinel cache, locking and session backends for TYPO3
Qc Backend Page Language
This extension brings back the behaviour from TYPO3 v10 that language selection is kept while browsing the Pagetree in Page module with option Languages instead of Column.
Powermail for Developers
Displays all Powermail parameters: GET, POST and session data. Place the plugin before the Powermail plugin. Enter your IP address. Include the static template. That's all.
Storage framework manager
Storage framework manager extension for TYPO3
Extbase Session Entities
Extends TYPO3's Extbase framework by possibility to work with session entities over several actions without persisting, including partial model validation.
Netresearch session module.
Provides a more secure, stable and scalable session handler which uses caching framework.