The 0.1.11 version of Seald 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 Seald. Seald for Mac lies within Security Tools, more precisely Personal Security. We recommend checking the downloaded files with any free antivirus.
From the developer:
Seald is a one-click encryption tool that keeps unwanted eavesdroppers out of your conversations. This app makes secure communications easy and fun.
It allows you to end-to-end encrypt (RSA-4096 and AES-256) all your messages, documents, posts, etc. Only the intended recipient, and nobody else, can read your messages.
You may want to check out more Mac applications, such as ZendGuard, LOCKME or CryptStore, which might be related to Seald.