Multidoge is described as 'MultiDoge is a desktop Dogecoin client, powered by dogecoinj. Ported from the MultiBit Bitcoin client' and is an app in the Business & Commerce category. There are more than 25 alternatives to Multidoge for a variety of platforms, including Online / Web-based, Windows, Mac, Linux and Android. The best alternative is PayPal. It's not free, so if you're looking for a free alternative, you could try Monero or Litecoin. Other great apps like Multidoge are NameCoin (Free, Open Source), Dogecoin (Free, Open Source), Duniter (Free, Open Source) and Payoneer (Paid).
Monero is a digital currency that is secure, private, and untraceable. It is open-source and freely available to all. With Monero, you are your own bank. Only you control and are responsible for your funds, and your accounts and transactions are kept private from prying eyes.
DASH is an open source peer-to-peer cryptocurrency that uses a system called Darksend to add privacy to transactions. It allows you keep your finances private as you make transactions, similar to cash.