CalyxOS (English Wikipedia)

Parker, Carey (2023), Parker, Carey (ed.), "Odds and Ends", Firewalls Don't Stop Dragons: A Step-by-Step Guide to Computer Security and Privacy for Non-Techies, Berkeley, CA: Apress, pp. 541–558, doi:10.1007/978-1-4842-9036-1_13, ISBN 978-1-4842-9036-1, retrieved April 13, 2023{{citation}}: CS1 maint: work parameter with ISBN (link)

golem.de (Global: 3,168^th place; English: low place)

Moritz Tremmel (October 19, 2020). "CalyxOS im Test: Ein komfortables Android mit einer Extraportion Privacy". Golem.de (in German). Retrieved February 2, 2021.
Tremmel, Moritz (November 10, 2020). "Bye-bye, Lineage OS!". www.golem.de (in German). Archived from the original on November 12, 2020. Retrieved November 2, 2021.

"5 De-Googled Android-based Operating Systems". It's FOSS. November 13, 2021. Retrieved April 13, 2023. Instead of not shipping the Google Mobile Services (GMS) and leaving users to figure stuff out by themselves (flashing gapps etc), CalyxOS ships with microG. However, you can choose to enable/disable it, thus, giving you total control. [...] Uses Mozilla Location Services instead of Google's Location Services

"CalyxOS: Google-freies Android". Linux-Magazin (in German). Retrieved April 13, 2023. Bei der Installation wird auch der Geräteschlüssel von Google gegen einen von CalyxOS ausgetauscht. Das ermöglicht einen verifizierten Bootvorgang und stellt sicher, dass sich nur von CalyxOS signierte Updates installieren lassen. Um den Schutz zu aktivieren, fragt der Installer am Schluss, ob er den Bootloader wieder sperren soll, was es zu bestätigen gilt. Anschließend ist die CalyxOS-Installation startklar.
Tremmel, Moritz. "CalyxOS: Google-freies Android". Linux-Magazin (in German). Retrieved November 2, 2021.

"What's the Best Privacy-Focussed Android ROM?". MUO. March 29, 2021. Retrieved November 2, 2021.

"Organic Maps: Offline Hike, Bike, Trails and Navigation". 13ea2c58.organicmaps.pages.dev. Archived from the original on August 24, 2023. Retrieved August 24, 2023.

"Annual Report 2018-2019" (PDF). Calyx Institute. Archived from the original (PDF) on July 26, 2022. Retrieved August 9, 2025.
"Organic Maps: Offline Hike, Bike, Trails and Navigation". 13ea2c58.organicmaps.pages.dev. Archived from the original on August 24, 2023. Retrieved August 24, 2023.
"Annual Report 2019-2020" (PDF). Archived from the original on July 26, 2022. Retrieved September 19, 2022.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
Tremmel, Moritz (November 10, 2020). "Bye-bye, Lineage OS!". www.golem.de (in German). Archived from the original on November 12, 2020. Retrieved November 2, 2021.

Hazarika, Skanda (November 4, 2020). "LineageOS adopts SeedVault as its open source backup solution". XDA Developers.
Hazarika, Skanda (March 31, 2021). "LineageOS 18.1 based on Android 11 is here for nearly 60 devices". XDA Developers. Retrieved April 13, 2023.