This GTK3 application shows you which games you have installed on your system. You can select the game of which you want to backup or restore the savegames and start the processing.

By default it mainly supports the games of the Humble Indie Bundles. Though it can easily be extended by other games.
The application currently is available in german (which is my mother tongue), english and spanish language. Translators for other languages are welcome, of course!

Alphabetical list of all games supported (see http://bazaar.launchpad.net/~fckawe/humblesb/trunk/view/head:/source/hsb_data/games.xml):

0 A.D. +++ Amnesia - The Dark Descent +++ And Yet It Moves +++ Anomaly Warzone Earth +++ Aquaria +++ Atom Zombie Smasher +++ Avadon +++ Bastion +++ BIT.TRIP BEAT +++ Blocks That Matter +++ Braid +++ Caster +++ Clone Wolf +++ Closure +++ Cogs +++ Crayon Physics Deluxe +++ Darwinia +++ DEFCON +++ Dino Run SE +++ Dungeons of Dredmor +++ Dustforce +++ Dynamite Jack +++ Edge +++ Eufloria HD +++ Fieldrunners +++ Frozen Synapse +++ Gratuitous Space Battles +++ Hammerfight +++ Harvest: Massive Encounter +++ Hedgewars +++ iBomber Defense Pacific +++ Jamestown +++ Jasper's Journeys +++ Legend of Grimrock +++ Lilly Looking Through +++ LIMBO +++ Lone Survivor +++ Lugaru - The Rabbit's Foot +++ Lume +++ Machinarium +++ Multiwinia +++ Nikki and the Robots +++ Oolite +++ OpenTTD +++ Osmos +++ Penumbra: Overture +++ Psychonauts +++ Revenge of the Titans +++ Shadowgrounds +++ Shadowgrounds Survivor +++ Shank +++ Shank 2 +++ Shatter +++ Snuggle Truck +++ Solar 2 +++ SpaceChem +++ Space Pirates And Zombies +++ Spirits +++ SteelStorm +++ Super Hexagon +++ Super Meat Boy +++ Swords & Soldiers +++ Sword & Sworcery +++ The Binding of Isaac +++ The Journey Down: Chapter One +++ Toki Tori +++ Torchlight +++ Trauma +++ Trine +++ Uplink +++ Vessel +++ Voxatron +++ VVVVVVV +++ Waking Mars +++ Warzone 2100 +++ World of Goo +++ Zen Bound 2