SA Tools
The SA Tools are the main modding suite for Sonic Adventure DX and Sonic Adventure 2.
The following tools are available in the suite:
Common tools
SA Tools Hub: Main application for creating mod projects and managing the tools
SALVL: Level viewer/editor
SAMDL: Model viewer/editor
SAFontEdit: Font editor
Texture Editor: Viewer for PVM, GVM, PVMX, PAK and other archives, as well as PVR and GVR textures
Data Toolbox: A multi-purpose tool mostly used to work with binaries
SA1/SADX tools
SADX Tweaker: An editor for various gameplay aspects of the game
SADXSndSharp: An editor for .DAT soundbanks used in the 2004 and Steam versions of SADX PC
SASave: A save editor for Sonic Adventure and its ports
VMS Editor: An editor for various Visual Memory data used by the Dreamcast version of Sonic Adventure
SA2/SA2B/SA2 PC tools
SA2 Event Viewer: Cutscene viewer for EV files in SA2
Research tools
In addition to the main suite, the SA Tools have a [research repository] where various experimental tools are hosted.