TeXworks is a Office Tools software developed by Johnatan Kew. After our trial and test, the software is proved to be official, secure and free. Here is the official description for TeXworks:

An environment for authoring TeX (LaTeX, ConTeXt, etc) documents, with a Unicode-based, TeX-aware editor, integrated PDF Viewer, and a clean, simple interface accessible to casual and non-technical users.

TeXworks is inspired by Dick Koch's award-winning TeXShop program for Mac OS X, which has made quality typesetting through TeX accessible to a wider community of users, without a technical or intimidating face. The goal of TeXworks is to deliver a similarly integrated, easy-to-use environment for users on other platforms, especially GNU/Linux and Windows.