DBReplicator is a powerful application for network-based multi-master heterogeneous database replication or filtered synchronization. It supports heterogeneous replication, bi-directional data synchronization between any of the supported database backends, application independence, automatic conflict detection and resolution, a scheduling facility, verbose debugging using Apache log4j, special characters, and automatic table creation.
The Java Fiscal Device API is a medium-level API to communicate with fiscal devices such as fiscal printers. It handles the communication protocol, the formatting and parsing of the protocol packets, and provides event-based notification for certain events such as out-of-paper events. It was made for Hasar printers (in use in Argentina and other countries) but also works fine with Epson printers.