Copay is a hierarchical deterministic (HD) bitcoin wallet that was created by Bitpay. Copay is a great open sourced option for businesses because it is multi-signature, which means that a single wallet can have more than one user. It can be set up to require multiple signatures to secure a transaction. It is easy to use and is a good option for beginners.
Copay is available on desktop, web and mobile interfaces, allowing multiple options for wallet access. Copay has strong security features and is also one of the first bitcoin wallets to support the entire Bitcoin Protocol.

Jax is a desktop wallet