Software Livre

The lab is comprised of integrated collaborative social networks that aim to develop products in the free software area.

FSW is an open technology that allows the generation of knowledge by developing and sharing free solutions. This way society can access available information and technology in different areas. The implementation of free software’s, which are the result of technological revolution, brings about the innovation in the process of evolution and transferring of knowledge.

The aim of FSW-CPAI’s lab is to participate in initiatives related to free software and to promote scientific discussion about this topic, in order to obtain and disseminate information about open technologies.

Free software is an expression that was firstly used by Richard Stallman in 1984 in the project GNU and afterwards by the Free Software foundation. Free Software means respecting users freedom or allowing free access to information and knowledge. The idea behind Free Software is that every single computer program can secure the following freedom to all users:

  • Freedom 1: the freedom to execute the program for any purpose.
  • Freedom 2: the freedom to study how the program works and to adapt it to user’s needs. Access to the source code is a prerequisite to this purpose.
  • Freedom 3: the freedom to distribute copies in order to help other users.
  • Freedom 4: the freedom to improve the program and share this knowledge so all users can benefit from it. Access to the source code is a prerequisite to this purpose.

The denial of any freedom above is against free software politics.

In order to use freedom mentioned above it is necessary to work under a free software license. Free software licenses are based on Copyleft Law and they can be classified in three categories:

  • Permissive licenses: they are known as academic licenses and this denomination is related to the fact they present few restrictions to users.
  • Full copyleft licenses: this kind of license presumes that any derivative work must be distributed and shared on the same terms of the original license.
  • Partial copyleft licenses: known as weak copylefts, they presume that any modification in specific software must be available by the same license.