kreXX Debugger
Alternative for `f:debug` (fluid) and `debug();` (PHP) with additional analysis features and logging options.
MK Log
Keep track of developer logs. Provides automatic email notification about important errors.
Form log
Form log for TYPO3
MySQL Report
Analyze and profile your TYPO3 database queries
Tools for your TYPO3 installation
This TYPO3 extension checks the size of all database tables and/or the size of all log files at regular intervals. If a certain size is exceeded, a mail can be sent. There is a separate scheduler task
404 Logging
Creates a log overview of 404 errors that have been handled by the standard PageErrorHandler but have not been logged anywhere yet.
co-stack.com Logs
Log Reader with a backend module and API to read, filter and delete logs from the TYPO3 Logging API
TYPO3 Advanced Error Log
This TYPO3 extension manages errors and exceptions, even before TYPO3 fully loads. It groups and displays errors in the backend, with detailed information and stack traces. Configurable notifications
Developer's Log
The Developer's Log extension provides development logging/debugging functionality for usage of GeneralUtility::devlog() and a BE module to browse the logs.
Development log
An extension to capture TYPO3 devlog messages for debugging. Provides a backend module.
Logging
Logging in TYPO3 by using monolog
DBAL Utility
DBAL convenience methods and query log