Free Software Foundation

The Free Software Foundation is a Massachusetts-based 501(c)(3) nonprofit organization that promotes the development and use of free software and documentation.

• 🏠 Website
  • fsf.org #52,282
• 🏤 Headquarters
  • Boston, Massachusetts, United States
• 🗓️ Founded
  • 4 October 1985 (40 years ago)
• 🔗 Links
  • Wikipedia

⚡ Technologies

We track 3 technologies owned or developed by Free Software Foundation that are used across the web.

#	Technology	Reach The percentage of websites using the technology out of the total number of sites analyzed.
1	Gzip A file compression technology based on the algorithm that adds headers and a checksum for data integrity while reducing the size of HTTP responses sent from servers to browsers.	23.1%
2	GNU License The GNU General Public Licenses are a family of free, copyleft software licenses created to guarantee users the freedom to run, study, share, and modify software while ensuring those freedoms are preserved when the software is distributed.	0.04%
3	Emacs A fully programmable text editor available for most modern operating systems. FreeOpen source

🗃️ About This Data

• We evaluate the popularity of technologies based on the number of websites where we detect their usage.
• Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
• This report is based on the analysis of 3,629,123 websites.
• Statistics were last calculated on August 13, 2026.
• For more details, see our methodology and disclaimer.