If indie means independent, then try Cryptic. They are rock and i think they are really good.

heres my list of great indie songs. there are some bands from america, the uk, and australia.
artist – song
arctic monkeys – leave before the lights come on
arctic monkeys – mardy bum
arctic monkeys – fluorescent adolescent
yeah yeah yeahs – y control
yeah yeah yeahs – gold lion
yeah yeah yeahs – cheated hearts
the fratellis – chelsea dagger
the fratellis – flathead
the grates – science is golden
the grates – milk eyes
british india – run the red light
british india – funeral for a trend
born ruffians – hummingbird
born ruffians – badonkadonkey
port o’brien – i woke up today
port o’brien – my eyes won’t shut
cold war kids – hospital beds
vampire weekend – oxford comma
vampire weekend – mansard roof
noah and the whale – 5 years time
have fun!

for techno I’d recommend some infected mushroom, T.Raumschmiere, Paul Oakenfold, Chemical Bros., Crystal Method, DJ Icey, Fatboy Slim, orbital, and Jackson and his computer band. they make some really awesome stuff that you may like.