With Sync Solved, Dropbox Squares Off With Apple’s iCloud
wired.com
wired.com
Anyways I use both and to me they aren't really competitors. Apple doesn't allow stuff like Dropbox to have tight integration with IOS - the biggest value iCloud provides is stuff like Photo syncing, which they aren't even good at.
Funnily enough, what I do is enable iCloud photostream, then store my iPhoto library in Dropbox. The idea is that whenever I take a photo on my iPhone it gets seamlessly synced AND backed up automatically OTA.
That's why version control with full history is infinitely better than sync solutions for file management.
As soon as someone comes along that has integrates as seamlessly on my Windows PC, Linux PC and Android phone AND offers permissions on shared folders I will jump ship.
I don't know why, but it actually makes me cross that they aren't listening to their user-base.
Disclaimer: I work for Egnyte.
But having said that, we do provide WebDAV API. Every modern OS I know of, including Linux, can mount a file system over WebDAV. It is not very efficient, and doesn't have all the features you would get with a client, but at least you have access to your files.
Some people actually prefer to use only WebDAV, because that way as soon as you cut network connectivity the files are not accessible (security feature).