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Harald Welte (born 1979) is a programmer.

Harald Welte
Harald Welte 27C3.jpg
Born1979 (age 39–40)
ResidenceBerlin, Germany

Welte is also involved in free software projects Openmoko, (a version of Linux for phones), OsmocomBB and the netfilter/iptables project (a firewall mechanism). He is a member of the Chaos Computer Club.


Linux kernel developmentEdit

Until 2007, Welte was the chairman of the core team responsible for the netfilter/iptables project.[1] He is also credited with writing the UUCP over SSL how-to, and contributions to User-mode Linux and international encryption kernel projects, among others.

GPL enforcementEdit

Welte has become prominent for his work with, an organisation he set up in 2004[2] to track down and prosecute violators of the GPL, which had been untested in court until then.


Welte part of Openmoko team, a project to create a smartphone platform using free software.[3]

However, in 2007, Welte announced his withdrawal from Openmoko, citing internal friction and demotivation. He continues to contribute as a volunteer to the project.[4]

Awards in 2008Edit

On 19 March 2008, the Free Software Foundation (FSF) announced that it had awarded the Award for the Advancement of Free Software for 2007 to Welte,[5] stating that "The awards committee honored both Welte's technical contributions to projects like the Linux kernel and the OpenMoko mobile platform project, and his community leadership in safeguarding the freedom of free software users by successfully enforcing the GNU General Public License in over one hundred cases since the project began in 2004."

On 22 July 2008, Welte received the Defender of Rights Open Source Award, presented to him by Chris DiBona, who indicated the award was primarily for Welte's work on[6][7]


On 25 July 2008, VIA Technologies appointed Harald Welte as its open source liaison. According to VIA, in his role as open source liaison Welte will be responsible for helping refine VIA’s open source strategy and optimise its support for Linux.

Welte will also "assist VIA to develop drivers that are in line with the standards and best practices of Linux kernel development, enhance the quality and public availability of VIA documentation, and improve interaction with the open source development community".[8]


  1. ^ "Project history". About the netfilter/iptables project.
  2. ^ "Software-Harald gegen Goliath". Archived from the original on 2012-09-13.
  3. ^ "Cheap, hackable Linux smartphone due soon". Archived from the original on 2012-06-29.
  4. ^ "Leaving Openmoko "Lead System Architect" position". Harald Welte's blog.
  5. ^ "Harald Welte and Groklaw announced as winners of the FSF's annual free software awards".
  6. ^ "Winners of the Google-O'Reilly Open Source Awards Announced". OStatic. 2008-07-23. Retrieved 2013-04-25.
  7. ^ Kuhn, Bradley (2008-07-22). "Welte Receives Open Source Award for GPL Enforcement". Retrieved 2013-04-25.
  8. ^ "VIA hires OSS sharp shooter". Tectonic.


External linksEdit