foto  1.0

fast, simple, beautiful, and it's free

Install (Ubuntu 14.04/Ubuntu 14.10, elementaryOS Freya)
sudo add-apt-repository ppa:erasmo-marin/foto-1.0
sudo apt-get update
sudo apt-get install foto
Building from source (check INSTALL file for more details)
bzr branch lp:foto/foto-1.0
cd foto
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
make
sudo make install