UK: Liberal Democrat
US: Democratic
France: MoDem
Germany: No idea, I don't like their FDP. Maybe Pirates?
Canada: Liberal
Malaysia: Pakatan Rakyat
New Zealand: ACT
Australia: I don't like any. I liked Australian Democrats
Northern Ireland: Alliance
Irish Republic: Fianna Faìl, if I had to choose.
Netherlands: VVD
South Africa: Democratic Alliance
Japan: Democratic Party of Japan
Italy: Italian Radicals
I'm sure I don't fully understand your politics, but based on your other choices, why ACT in NZ? They're essentially a right-wing social conservative party, and the last choice of any left-winger in the country. (If you're going by Wikipedia, their page does a great job of making them appear almost the opposite of what they really espouse.)