The 1.0 version of NS Wallet for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is Nyxbull Software. The program is categorized as Security Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
NS Wallet is reliable, secure, multi-platform keeper for your confidential information (like passwords, credit cards numbers, pin codes, phones and etc). Secure and reliable password manager and data vault for Mac OS, it has been proving its quality since 2012.
You may want to check out more software for Mac, such as Wallet, Empty Wallet or Ethereum Wallet, which might be related to NS Wallet.