Projects / apcupsd


apcupsd provides UPS power management for APC products, including most BackUPS series models (including USB), SmartUPS V/S, SmartUPS (NET/RM), and Matrix series. It works under Linux and most Unix systems, as well as Win32.


Recent releases

  •  06 Jan 2006 11:34

    Release Notes: Highlights of this release include a GUI installer for Win32 systems, battery disconnect/reconnect detection for smart serial and USB connections, SNMP trap catching for quicker SNMP event responses, and numerous bugfixes.

    •  05 Nov 2004 03:05

      Release Notes: Killpower now works correctly for USB UPSes (with kernel 2.4.22 or later). The documentation has been converted to texinfo format. There are lots of other minor bugfixes and stabilization updates.

      •  02 Aug 2004 12:58

        Release Notes: This is mainly a bugfix release. Modifications were made to the NIS slave server code (net driver), which should be much more efficient and robust than in previous versions. The core code, is much more resistant to buffer overflows, since almost all string copies are now protected. A good number of other bugfixes were also made.

        •  21 Apr 2004 09:03

          Release Notes: This release has support for net snmp, fixed master/slave networking, improved NIS (net driver) networking, fixed major problems with USB, and made a number of improvements for avoiding possible buffer overruns.

          •  01 Jan 2004 11:53

            Release Notes: This release includes a workaround for a USB bug in kernels 2.5 and 2.6, fixes for several segmentation faults, a new master/slave driver, ONBATTERYDELAY to reduce minor power failure notifications, and some fixes to the Makefile.

            Recent comments

            09 May 2001 06:14 equinux

            Macintosh client released!
            The equinux APC Tracker is a APCUPS compatible client application, that powers off a Macintosh client computer regularly once power is interrupted. When starting up, the application connects to a APCUPSd network server (mostly under Linux/Windows), that is directly connected to the UPS. The server sends a signal to the client in case of a power failure.

            More information available on the APC Tracker Website (

            13 Jun 2000 16:27 scor42

            Newest version is available
            apcupsd has been released. version 3.7.2 now supports various versions of linux, as well as OpenBSD and FreeBSD.


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