[Lambdanaut]

You don't have to download the entire blockchain to use bitcoin.

See alternative wallets:

* https://electrum.org/

* https://multibit.org/

[imrehg]

Another vote for Electrum, it's awesome! For mobile, try Mycelium[0] (on Android).

[0]: https://play.google.com/store/apps/details?id=com.mycelium.w...