CriptoNita is a lightweight tool (in Portuguese) that allows us to encode messages in such a way that third parties cannot know what is written in them. CryptoNita makes text encryption very easy.
Its interface consists of a single window divided into two parts. In the upper box we must write the text to be encoded, protected by a key, and below, the text already encrypted, which can also be decrypted using the same key. The only configuration required by the program is precisely that of that key.
If you have private information, don't take a chance and try CriptoNita. Although it is in Portuguese, its use is very intuitive.
You can free download CriptoNita 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.