A Q&A website is an online platform for sharing knowledge, where users can ask their questions, and ultimately generates valuable information for the user through the act of social replies, comments and polls. Quickly solving users' problems will give them an excellent experience and they will like your website as a result, which will help increase the stickiness of your website. Also, Q&A content is more popular with search engines, which will bring you a constant stream of new users.

With the development of network technology, our demand for file synchronization and backup is also becoming stronger. While various web disk services provide us with convenience, they also bring a lot of restrictions and risks in terms of speed, security and privacy. There are many cloud synchronization solutions, such as Seafile and Nextcloud, which are feature-rich but bulky and difficult to deploy cloud disk programs. But if we only need to synchronize files, then a better choice is Syncthing. In comparison, it is lighter, easier to deploy and use, more secure, and especially has faster file transfer.

A multifunction mouse usually has at least 6 buttons (left + right + middle buttons, DPI button, and two side buttons), and their functions are usually unchangeable, except for those high-end mice with programmable buttons whose functions can be set after installing the official driver. If you want to set any button of any brand of multifunction mouse on demand, then X-Mouse Button Control is what you need.

The human memory is limited, especially in these days when there is so much information. So we all need to use some note taking software to help memorize, otherwise you will slowly forget a lot of things over time. But everyone has different needs and habits, so a large number of note taking tools with different characteristics have been created, such as Evernote, OneNote, Bear, ZoHo, Leanote, GitNote, SimpleNote, Boost Note, and Joplin.

fSpy is a free and open-source application for quick and easy still image camera matching on Windows, Mac and Linux platforms, developed by Stuffmatic (Per Gantelius) from Sweden. It can calculate the properties (field of view, focal length, position and orientation) of the real camera from a photo, and transfer this data to the virtual camera of 3D software for use.