Camunda - The Universal Process Orchestrator
PHPmaker - PHPMaker is a powerful automation tool that can generate a full set of PHP quickly from MySQL, PostgreSQL, Oracle, Microsoft Access, Microsoft SQL Server and SQLite databases.
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
VFront - VFront is a dynamic front-end for MySQL or PostgreSQL databases written in PHP and Javascript.
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.
PHPRunner - PHPRunner builds visually appealing web interface for popular databases.