Tiny Translator is a very simple class for easily organizing dialogue outputs and creating language tables for multilingual projects. It supports flat files (comma seperated, .csv) and MySQL databases to store phrases.
Web-based gettext collaborative translation tool. Uses PHP, Smarty and MySQL. I tracks every changes, unlimited projects, unlimited languages per project, supports project versions, exports to .po and .mo.
Free open source PHP5 framework for small to midsized projects. Supports abstraction for MySQL, SQLite, PostgreSQL, and MsSQL database servers including in conjunction with the O/R mapping automatic schema synchronization.