I wrote check_puppet - Nagios plugin to check Puppet daemon availability.
Take the latest version 1.1
Why check_puppet?
1. It does check whether puppetd and puppetmasterd is alive.
2. It does check state.yaml freshness.
3. It does not require the full net-mgmt/nagios-plugins package on the client side.
4. It is written in sh - code interpreter available in a base system.
5. It is possible to automatically restart puppet client or puppet master daemon if crash detected (however not implemented yet).
6. It is in the official FreeBSD ports tree under net-mgmt/nagios-check_puppet.

Also I wrote mysqlbackup program to create everyday MySQL-database servers backup.
Take the latest version
Why mysqlbackup?
1. By setting just one variable in periodic.conf(5) it is possible to create everyday MySQL-backups with some additional functions.
2. Backups can be compressed on-the-fly and automatically rotates after specified number of a days past.
3. It is includes basic database maintenance: check, optimize tables before backup creation.
4. It can be safely used on a large MySQL installations (1000+ databases).
5. It is written in sh - code interpreter available in a base system.
6. It is possible to select the preffered time period to create backups (however not implemented yet).
7. It is in the official FreeBSD ports tree under databases/mysqlbackup.

I widely use Exim MTA and like to split it's logs by date with %D macro in log_file_path.
I wrote patch on exicyclog program from Exim distribution to allow it support for rotate timestamped logs.
Also it allow alternative compressor programs to use. For example, I like p7zip archiver. In my test it can compress logs up to 3 times faster than bzip2 compressor does.
A patched version of exicyclog will support xz compressor as well.
Take the patch on Exim 4.76 or complete FreeBSD port for a patched version of exicyclog program.

Feel free to contact me at alexey@renatasystems.org