The OpenCA Project is a collaborative effort to develop a robust, full-featured and Open Source out-of-the-box Certification Authority implementing the most used protocols with full-strength cryptography world-wide. OpenCA is based on many Open-Source Projects. Among the supported software is OpenLDAP, OpenSSL, Apache Project, Apache mod_ssl.
OraRep is a PL/SQL snippet (embedded in a shell script) which creates a well-formatted HTML report on a given database instance, providing you with an overview on your instance(s), some hints for performance tuning, and more. It has been tested with Oracle 8.1.7, 9.0.1, and 9.2. The script easily fits into a cron task to be run on a regular basis. Sample output (HTML) is included. OSPRep does the same job for Oracle StatsPack Reports based on SnapShot Levels up to 7, and provides additional "plugins" for more detailed reporting on special issues. It also optionally creates a separate page with charts to visualize the results and more.
DBAHelper is a collection of scripts to ease the daily maintenance work of Oracle database administrators. Examples are moving objects between tablespaces, analyzing schemata, and rebuilding invalid indices. Also included is a little framework to simplify the use of RMAN (this framework depends on the use of Oracle 10g with the Recovery Area enabled and properly sized, so all backups go there).