Grism is a Scripts software developed by Nicholas Rahn. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Grism:

BSEditor: Grism allows you to easily track the evolution of stock prices through watchlists, portfolios and charts. You can observe stocks, ETFs, indices and mutual funds from every major stock market in the world. It is written in Ruby using ruby-gtk2.
* Development Status: 5 - Production/Stable
* Environment: Win32 (MS Windows), X11 Applications
* Intended Audience: End Users/Desktop
* License: GNU General Public License (GPL) version 2
* Operating System: OS Independent
* Programming Language: Ruby
* Topic: Investment