Gearman
7.3#4 in task queue softwareFree planFree planAPILinuxmacOSSelf-hosted
VisitGearman suits developers who need to distribute jobs among machines or processes and can operate a self-hosted system. Its listed language interfaces and database integrations may suit teams using those environments.
pg-boss is suited to teams already using PostgreSQL who want job processing without operating another system. Its documentation targets teams comfortable with relational database concepts, SQL, querying, and backups.