Libfastcounters is a C library to maintain counters. It makes it convenient for a server program to count many kinds of events. Incrementing is fast, on the order of nanoseconds. Incrementing is atomic. Counters are shared across processes. Counters are persistent. You can address counters by number or by name. Libfastcounters includes a command line tool to create, modify, and read the persistent counters file.
The p2pd package can be used to build scalable content distribution networks (CDNs) for interactive video-on-demand (VoD) streaming. It can be used as a server, a cache, and a client, and used to construct both traditional CDNs and P2P-based CDNs that make use of client resources to stream video files. The system is network aware, attempts to make efficient use of the available resources, and adapts to server failures.
Opsview Core is a network monitoring software application. It solves the challenges of monitoring modern IT and network systems. It is a drop-in replacement for Nagios Core, with full support for its plugins and 100% compatibility. It is easy to install and configure and is ideal for monitoring applications networks, and Windows, Linux, and Unix servers. VMWare, KVM, Xen, and Microsoft Hyper-V are supported, and Amazon EC2 and other cloud services can be monitored. It works with Opsview Mobile to allow you to monitor your systems on the go.