...Developer mailing lists will still be kept at Sourceforge.
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OWFS -- 1-Wire file system. Use the Dallas 1-Wire and iButton chips with standard filesystem commands. Create temperature loggers. Monitor everything. OWHTTPD -- same system, only used as a light weight web server. OWFS is also ported to embedded routers, Mac OSX and Windows.
Basically you can use these inexpensive little sensors and other chips with very simple wiring to sense and control the physical environment. The interface is very flexible -- everything from a web browser, to read and writing directly to the chip's "file" to integrating with your programs -- even over the internet.
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A complete OpenSource Network Management System Is SNMP-Standard Oriented (tested on Cisco and Linux). It Integrates Syslog, Tacacs, RRDtool (Performance Graphs), Maps, Traps, TFTP, Autodiscovery, Sound Alerts, AAA, Modular and Extensible.
Tools to help you control IT systems and escape their control over you
monitor - pings nodes, records response times, and alerts when unreachable
checkinout - check in/out tracker for Helpdesk items
logger - configuration change logger and notifier
assets - asset manager (yet to be developed)
projects - project tracker (yet to be developed)