Computer that allows downloading (and uploading in some cases) of files by the use of file transfer protocol (FTP) over the internet. There are over a thousand FTP sites with hundreds of thousands of text, graphics, sound, and video files freely available to anyone. However, a FTP site is not a website because its data cannot be displayed like a webpage. See also anonymous FTP.
Scientific tools for making observations include a microscope, which is a tool used to see very small objects. In your science lab you use a compound microscope to see cells in 2-D, but a scientist can use a scanning electron microscope to view tiny objects in 3-D.
Tools can be incredibly simple; such as a rock used to crush seeds. Some tools are incredibly complex; consider the computer used to write these words into sentences. There are some tools that are not immediately obvious as being tools; like clothing, blankets, shelters and houses and fire.