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CalyxOS
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CalyxOS
CalyxOS is an Android-based operating system for select smartphones, foldables and tablets with mostly free and open-source software. It is produced by the Calyx Institute as part of its mission to "defend online privacy, security and accessibility."
CalyxOS preserves the Android security model, using Android's Verified Boot system of cryptographic signing of the operating system, and running with a locked bootloader. CalyxOS also features an installer that guides the user through the process of unlocking and then re-locking the bootloader.
The Calyx Institute annual reports state CalyxOS was publicly launched during their 2018–2019 fiscal year. Inspiration included Tails and Qubes OS, and goals were said to be "completely open source", removing proprietary Google tracking, and including apps Tor, Signal and CalyxVPN for increased privacy.
CalyxOS supports select Google Pixel, Motorola and Fairphone devices, while offering "extended support" for some older Google Pixel devices and the SHIFT SHIFT6mq.
Around April 2022, CalyxOS announced support for the Fairphone 4, OnePlus 8T, 9, and 9 Pro. However, in May 2022, CalyxOS announced OnePlus builds were pulled because the bootloader could no longer be relocked on newer device firmware.
In March 2024, CalyxOS added support for the Fairphone 5.
On the 1st of August 2025, the Calyx Institute published a letter to the CalyxOS community, in which it was announced that they had decided to pause CalyxOS maintenance and development for 4-6 months to retool and overhaul their processes. It was explained that this was due to their president and founder Nicholas Merrill leaving the organisation, and the recent departure of the Calyx tech lead Chirayu Desai.
CalyxOS ships with MicroG as an open-source alternative to the Google Mobile Services, including Mozilla Location Services as an optional replacement to the location services provided by Google, but gives the user the option to disable microG and its location services.
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CalyxOS AI simulator
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CalyxOS
CalyxOS is an Android-based operating system for select smartphones, foldables and tablets with mostly free and open-source software. It is produced by the Calyx Institute as part of its mission to "defend online privacy, security and accessibility."
CalyxOS preserves the Android security model, using Android's Verified Boot system of cryptographic signing of the operating system, and running with a locked bootloader. CalyxOS also features an installer that guides the user through the process of unlocking and then re-locking the bootloader.
The Calyx Institute annual reports state CalyxOS was publicly launched during their 2018–2019 fiscal year. Inspiration included Tails and Qubes OS, and goals were said to be "completely open source", removing proprietary Google tracking, and including apps Tor, Signal and CalyxVPN for increased privacy.
CalyxOS supports select Google Pixel, Motorola and Fairphone devices, while offering "extended support" for some older Google Pixel devices and the SHIFT SHIFT6mq.
Around April 2022, CalyxOS announced support for the Fairphone 4, OnePlus 8T, 9, and 9 Pro. However, in May 2022, CalyxOS announced OnePlus builds were pulled because the bootloader could no longer be relocked on newer device firmware.
In March 2024, CalyxOS added support for the Fairphone 5.
On the 1st of August 2025, the Calyx Institute published a letter to the CalyxOS community, in which it was announced that they had decided to pause CalyxOS maintenance and development for 4-6 months to retool and overhaul their processes. It was explained that this was due to their president and founder Nicholas Merrill leaving the organisation, and the recent departure of the Calyx tech lead Chirayu Desai.
CalyxOS ships with MicroG as an open-source alternative to the Google Mobile Services, including Mozilla Location Services as an optional replacement to the location services provided by Google, but gives the user the option to disable microG and its location services.