PHP Logging Class can be used to log activity to a database. It can add activity entries to a log database table. It logs the activity priority level and class, the remote user identifier (if logged), and its computer IP address. Optionally, it can send email about the activities being logged to a given email address. It can also display log entries as an HTML table.
SILVERCODERS SqlSync gives you the ability to compare data stored in two SQL databases and synchronize it. The results contain a list of records that differ, records that are missing, and records that are additional. It can generate SQL queries to make the second database identical to the first, and can execute them automatically. It will synchronize selected objects in databases or whole databases. You can control the process using command line arguments, and the results are both readable and easy to use for future processing with shell scripts. A C language library allows comparing databases from other applications. PostgreSQL 8.1.x, MySQL 5.0.x, FirebirdSQL 1.5.x, Microsoft SQL Server 2000, Microsoft SQL Server 2005, and Oracle 10g are supported. The two databases being compared can be driven by two different SQL servers.
Postgres Plus is a distribution of PostgreSQL that contains the following additional features integrated in a convenient installation package: Postgres Studio for administration, Procedural Language Debugger, Geospatial extensions, GridSQL Parallel Query, MySQL Migration utility, Slony-II for replication, and pgmemcache for application scaling. The package contains both BSD and GPLv2 licensed software.