• Real-time Online/Offline Charging System (OCS).
• Account Balances Management with bundle support.
• Session or Event charging with reservation.
• Rating engine.
• CDR logging with support for Interim Records.
• QoS LCR and LCR over Bundles.
• Fraud detection with automatic mitigation.
• Call Statistics with pattern monitoring.
• Performance oriented.
• Modular architecture.
• Test driven development.
• Plug-able/non-intrusive into existing setups.
• Cloud-ready, built on independent micro-services with rich set of RPC APIs.
• Agile in developing new features.
• Very fast (5000+ req/sec on a single machine)
• Good documentation.
• Commercial support available

Step by steps tutorials

Debian apt-get repository

Installing CGRateS from sources on minimal debian (for devel or testing)

Browsable HTML docs https://readthedocs.org/docs/cgrates/

PDF, Epub, Manpage https://readthedocs.org/projects/cgrates/downloads/

API reference godoc