However, PayPal also advised that Mega’s unique selling point – it’s end-to-end-encryption – was a key concern for the processor."
Link to Original Source
I'm not sure why the parent got modded up as it does not meet the OP needs -- they explicitly said they wanted a local solution. For many people with data caps on their cellular and or home internet connection, syncing videos to your PC via the internet is not viable as you use double the bandwidth.
G+ is also monster for eating your cellular data -- even after telling it to sync photos etc via wifi only it still destroyed my data cap one day, I assume this was in some attempt to download an "autoawesome" video that had been generated but didn't obey the wifi-only preference.
To answer the local sync question, I use FolderSync, as another poster below mentioned already.
Yep, one more vote for GCompris -- both my kids enjoyed it when they were younger (now though, it's hard to prise them away from Minecraft
The linked article (and the blog post that it links to) doesn't say what makes the app a trojan as opposed to functionality the user may have actually been intending to install. What was the app pretending to be? Scaremongering, or just a poorly written blog post?
A better mail client, or better integration with a GUI mail client. Emacs together with Remembrance makes for an awesome mail combo, but every time I've tried to do Email in Emacs, it's been a huge effort to keep it going.
I find the Wanderlust email client for emacs is pretty damn good - give it a try.