Recent FreeBSD (development happens on 10-CURRENT only, but Tinderbox is known to work on RELENG_8 and RELENG_9 too), Perl (lang/perl5.14), and either MySQL (databases/mysql55-server) or PostgreSQL (databases/postgresql90-server). All versions of each in the ports tree are supported.
Note: Please note that is is recommended that for MySQL version 5.0 or later be used. There are currently no plans to make this a requirement, but it may happen in the future.
Note: SQLite support is only in Tinderbox version 4.0 or later
If you will be sending emails from Tinderbox (e.g. build failure or build completion emails) you must install net/p5-Net to get the Net::SMTP Perl module.