Florian Mueller, founder of the NoSoftwarePatents campaign, has attacked IBM for stifling open source innovation.
Writing on his blog, Muellar said, "After years of pretending to be a friend of free and open source software (FOSS), IBM now shows its true colors. IBM breaks the number one taboo of the FOSS community and shamelessly uses its patents against a well-respected FOSS project, the TurboHercules mainframe emulator."
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TurboHercules has filed an antitrust motion against IBM with EU regulators.
According to Muellar, the developers of TurboHercules asked IBM's permission to enable the emulator to run the z/OS mainframe operating system. IBM sent a letter to TurboHercules in March, warning the company that the emulator infringed more than 64 IBM patents.
Mueller said, "Hercules is simply seeking a way that its customers will be allowed to run IBM's z/OS mainframe operating system on Hercules. IBM generally does not allow its customers to run z/OS (hence also the application software those customers internally developed on top of it for trillions of dollars) on non-IBM hardware."