this post was submitted on 14 Feb 2026
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CoMaps
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Cooperative community open-source fork of Organic Maps, an offline privacy-respecting not-for-profit OpenStreetMap GPS app for your phone.
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Looks like they use both Open Addresses and NAD, a government-provided address database. Both appear free to download, but I don't know how easily it could be actually integrated into an app as I'm assuming that would require some time of API or something. I am also not a developer, just trying to figure out the best solution for navigation without giving all my data to Google. I did notice there's a "Custom Map Server" option in CoMaps settings, so maybe I could manually add something there? Not sure how that works though and maybe that overrides the default database instead of adding to it.