You will find all you need at the top of the forum. Here's he quick link for you.
https://bitcointalk.org/index.php?topic=2012799.0Here's the snippet of what wallet to used:
OK walletsThe following wallets give you some theoretical way of exporting your private keys, so they should be safe to hold BTC during Aug 1. Depending on what happens after Aug 1, you may have to export your private keys and use different software, though. (Do not go doing this willy-nilly in a panic, though -- wait for agreement and clear instructions from several sources. There will be no rush.)
The ones in bold are ones that I also tend to like for other reasons. The ones in italic seem to make it difficult to export your private keys, or I particularly dislike them for other reasons.
MobileElectrumMycelium
Copay
Bitcoin Wallet for Android
breadwallet
Simple Bitcoin Wallet
Bither
ArcBit
Coin.Space
DesktopBitcoin CoreElectrumBitcoin Knots
mSIGNA
Armory
Bither
ArcBit
Copay
HardwareLedger
Trezor
Digital Bitbox
KeepKey
Web
Green Address*
Coin.Space
* Note for Green Address: You must either use a 2of3 account or have nLockTime transactions emailed to you in the settings. Otherwise you're trusting Green Address too much.
I personally used Electrum though. Lightweight fast and easy to used.