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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I can't work out what's going on from that site. The tutorial and download sections seem like a placeholder, and the github link is dead, with the user having no related project (publicly).
I found this but it is quite old:
https://github.com/Amibian/amibian
I don't think you will see new custom chips made to match those chips, however they are small enough to be easy to implement in a modern CPLD/FPGA.
I know of three such projects at the moment:
J-CIA: https://1nt3r.net/j-cia/
FBI: https://www.forum64.de/index.php?thread/84273-wip-fbi-als-er...
VHDL6526: https://github.com/bwack/VHDL6526
The 6526 CIA from the C64/128 is almost identical to the 8520 from the Amiga, the only difference is in the time-of-day clock registers. The 6526 uses BCD encoded TOD, the Amiga 8520 counts seconds since midnight.