mplete Unix-like operating
system called the GNU system. As explained on the GNU website:
"Copyleft is a general method for making a program or other work free,
and requiring all modified and extended versions of the program to be
free as well. (...) Copyleft says that anyone who redistributes the
software, with or without changes, must pass along the freedom to
further copy and change it. Copyleft guarantees that every user has
freedom. (...) Copyleft is a way of using of the copyright on the
program. It doesn't mean abandoning the copyright; in fact, doing so
would make copyleft impossible. The word 'left' in 'copyleft' is not a
reference to the verb 'to leave' -- only to the direction which is the
inverse of 'right'. (...) The GNU Free Documentation License (FDL) is a
form of copyleft intended for use on a manual, textbook or other
document to assure everyone the effective freedom to copy and
redistribute it, with or without modifications, either commercially or
non commercially."

1984 > The Psion Organiser, first electronic agenda

Launched in 1984 by the British company Psion, the Psion Organiser is
the first electronic agenda. Later on, Psion launched the Psion Series
3 and Series 5, and the company expanded internationally. In 2000, the
various models (Series 7, Series 5mx, Revo, Revo Plus) compete with the
Palm Pilot and the Pocket PC, with fewer sales. The company decided to
diversify its activities. Following the acquisition of Psion Teklogix,
Psion Teklogix was created in September 2000 to develop wireless mobile
solutions for businesses. Psion Software was founded in 2001 to develop
software for the new generation of mobile devices using the Symbian OS
platform, for example the smartphone Nokia 9210, launched the same year.

1986 > Franklin launched dictionaries on handheld machines

Franklin, a company based in New Jersey (United States), launched in
1986 the first dictionary available on a handheld machine. Fifteen
years later, Franklin distributed 200 reference books on handheld
machines: monolingual and bilingual dictionaries, encyclopedias,
Bibles, textbooks, medical books and books for entertainment.

1990 > The World Wide Web

The World Wide Web was invented in 1989-90 by Tim Berners-Lee at CERN
(European Center for Nuclear Research), Geneva, Switzerland. In 1989,
Tim Berners-Lee networked documents using hypertext. In 1990, he
developed the first HTTP (HyperText Transfer Protocol) server and t