You can find the CPU miner here, the GPU miners are cgminer (AMD graphic cards) and ccminer(NVIDIA graphic cards).
You can find the KeyPair and Address Tool here. You can use this tool to create a brainwallet or an offline/coldstorage Mjollnircoin address
Our source code repositories are located at github.com/brokkir. The latest release is version 0.8.7.0 (7 july build)