In this brief review, I will look at several sites that will help you become more mobile and independent of computers, desktop applications and various storage media.
Perhaps most of these sites you already know and you have been using them for a long time, but if at least something is new to you, then the article is not written in vain. So in random order:

The best in my opinion (and in the opinion of the authors) site for managing tasks. It has everything you need:
- Project management
- Creating tasks
- Exchange of tasks between users
- Reminders
- Work offline
- And much more
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Service for storing and sharing files online. It looks like a virtual hard disk on which you can store your data, as well as open access to it for others. This is tantamount to direct file synchronization with the added benefit of being able to access files from any computer with Internet access. Just drop your files into one of the DropBox folders on your computer and that's it.
In the free version you are given 2 GB of space and the program you need to install on your computer (windows, linux, macos). Then the DrobBox dad appears on the disk with which you work as with any folder, all its contents are synchronized with the server.
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The site allows virtually all phone content, with the exception of multimedia content and downloaded programs / games, to be stored in a remote database. It allows you to store on the server not only the standard "contacts-calendar-messages", but also browser bookmarks, tasks, and even notes. Now, if you lost or changed your phone, you only need to set up synchronization in the new phone and all information will be automatically restored.
Support for a very large number of phones (attention, not only Google and apple backgrounds).
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On this site you can download the add-on for Firefox, IE and Safari. It will store all bookmarks with the entire hierarchy on the server, and at any time from any computer you can view all the bookmarks on the site or synchronize them with the new browser.
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Perhaps, unlike other sites, this one will bring less benefit to most readers, but it helps me a lot. IPlotz - Helps you quickly draw a sketch of the application, save it as a picture and send it to the customer. The base of the application is full of a huge number of different, ready-made elements. There is also a built-in project manager.
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Allows you to easily save information in any situation and using the device or platform that you prefer, makes this information available and allows you to search through it anytime, anywhere.
What can you remember:
- tasks and affairs
- notes and search results
- web pages
- presentations on the board
- Business Cards
- handwritten notes
- Photo
- wine labels
- even tweets
And then all this can be found on any computer or device that you have on hand. I do not use it myself for Linux, support for Windows and MacOS
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There are many more Google tools, life without which, now, is not conceivable to me, but this is another story.
That's all for now, write in the comments sites that make your life easier.