Where do you store phone numbers, addresses, secret passwords, websites ..
Where do you record your thoughts and debtors, cases of calculations ...
At random and scattered pieces of paper? It is not practical!
Throw off this simple, but very useful program on your personal flash drive and store any text data is in color and size. Make a bunch of bookmarks on different topics. And all your information is always with you.
Single-user version, written for himself, in fact, tested and used by my friends for more than 2 years.