These are the gold-standard title managers for Atmosphere. DBI is highly recommended for its stability and "MTP Responder" mode, which lets you drag and drop NSP files directly from your PC via USB.

This is the official file format used by Nintendo to deliver digital content through the Nintendo eShop. It contains the game binaries, graphics, audio, and metadata.

To understand why a patched file is highly sought after, it helps to understand Nintendo's file formats: