We run [[http://pvbrowser.org|http://pvbrowser.org]] According to our opinion data acquisition must be portable. 

We use a shared memory and a mailbox. see: [[http://pvbrowser.de/pvbrowser/pic/prinzip.png|http://pvbrowser.de/pvbrowser/pic/prinzip.png]] 

An alternative to a shared memory might be a database table which is memory mapped E.g. [[http://dev.mysql.com/doc/refman/5.0/en/memory-storage-engine.html|http://dev.mysql.com/doc/refman/5.0/en/memory-storage-engine.html]] 

We support Modbus (Serial Line and TCP) Siemens TCP Siemens PPI Ethernet_IP EIBnet/KNX OPC XML-DA PROFIBUS CAN DCON protocol 

Which protocols do you support ? 

Are you interested in cooperation ? For contact see: [[http://tech.groups.yahoo.com/group/pvbrowser/|http://tech.groups.yahoo.com/group/pvbrowser/]] 

This site seems to be down. Right ? There has been no response for over 1/2 an year. You can contact me as written above.