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We've taken a look at open source alternatives to Gmail and Google Calendar, but those are digital lifestyle staples that don't require a whole lot of smarts to work. What about something more complex and data driven, like mapping? Believe it or not, there are open source alternatives to Google Maps out there.
I won't make you wait for the big "but" here, though: none of these solutions offer the same feature set you get with Google Maps. As sad as it is, Google's advanced traffic detection and point-of-interest data are only possible when you have an install base counting in the billions.
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