Save Game Cloud Syncing Tools for Non-Steam games

I recently bought Blackguards on GOG and it was pretty great deal in my opinion since I got the game DRM free and with the soundtrack as well. But the I love to play these turn based strategy games in school during my lunch break. So I bring my laptop. But the GOG version doesn't have any cloud syncing tool that I know of.

So I went and looked up any cloud syncing management programs that are neat.

My question is have any of you in the community used these tools here. And please tell all the details like reliability, user-friendliness, system intensiveness (assuming some tools aren't as well made as others)

http://pcgamingwiki.com/wiki/Save_game_cloud_syncing