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Personnal or familly wiki with low ressource requirement.
Personal lightweight wiki based on DidiWiki. Upgraded to accept text and highlight color, image resize and video (youtube, dailymotion...) embedded. Written in C, doesn't require a lot of RAM. Works fine on Raspbian (Raspberry Pi).
Example of Ciwiki running on Raspberry Pi B+ (700MHz, 512MB):
http://inphilly.dyn.dhs.org
You Only Meter Once - The open hardware smart metering system
... and transmitted to the coordination device. This device offers interfaces to control the smart meters. On top of the software runs a apache webserver that provides all estimated data on our yomo project homepage.
The system does not need any maintenance and works out of the box after the devices were integrated into the households Wi-Fi network.
Link to the scientific paper:
http://link.springer.com/article/10.1007%2Fs00450-014-0290-8#/page-1