Governments and educational institutions must switch over to free software for computing as it stands for users' freedom, he said delivering a lecture on "A Free Digital Society", organised by Kerala Union of Working Journalists (KUWJ) and Society for Promotion of Alternate Computing and Employment (SPACE).
"Majority of non-free softwares are used for spying. We can block spying and surveillance if we are using free software," Stallman, the President of the Free Software Foundation, said.
Lavishing praises on Edward Snowden, the computer analyst who disclosed a large number of the US National Security Agency (NSA) documents, Stallman said the governments were trying to charge the whistle blowers with committing crime and
putting them in prison.
Social networking sites and majority of applications were stealing user's unseen information in secret formats, he said.
According to Stallman, anybody using proprietary software was using non-proprietary malware.
He also said the digital world should be free from censorship and sharing should be legalised.
"Now any country can censor internet connectivity. This is to block access to range of materials. This is dangerous for a democratic country. We have to legalise and encourage sharing also," he said adding that people must be free to digitise and share any published work.
He, however, said users should be ready to do some sacrifices to ensure their freedom in the digital space.
