Bots vs Browsers - Public Bot / User Agent Database & Commentary
Bots vs Browsers - database of 16,270,540 user agents and growing
User Agent Details for "Opera/5.0 (PlayStation; Replicant 10_12_11 VAX) AppleWebKit/380.50 (KHTML, like Gecko) plasma-overlay/29.6.621.24 Safari/380.50"