Z:gnu-www-ja-testimonial research ships--636add-GNU tar is an enhanced version/en

GNU tar is an enhanced version of standard Unix tar. But the enhancements are sensible, and merely looking at the help output one can see that they have been made by practical, experienced, people working with the code they write. The code is solid, reliable, and achieves exactly what it sets out to do. And it is familiar enough that anyone can use it.