Another vote here for Google Keep. It is fantastic. Has all kinds of useful features and you can collaborate with other Keep users on it. On my desktop computers (Windows and Ubuntu) I use Chrome to also set Keep up as a web app that I can simply run like any other app on my computer. I like using it that way. All of your Keep stuff is available if you ever need to log in using someone else's computer as well since it is all cloud based.
For photo management and sharing I vote for Google Photos. I use it on both my Android and iOS devices for mobile and once again as a web app on all of my desktop computers. Tons of features. Available everywhere. Easy sharing. Great automated features.
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