The key applications within the Adobe Substance 3D suite include:

1. Substance Painter: Substance Painter is a 3D texturing software that allows artists to paint detailed textures directly onto 3D models. It provides a range of brushes, materials, and procedural tools to create realistic and visually appealing textures.

2. Substance Designer: Substance Designer is a node-based texturing tool that enables artists to create complex and customizable materials for 3D models. It uses a graph-based approach, allowing users to create intricate textures by connecting nodes and tweaking parameters.

3. Substance Alchemist: Substance Alchemist is a material authoring software that enables users to create, edit, and modify materials using scanned or procedural inputs. It’s particularly useful for generating realistic and physically-based materials for use in 3D projects.

4. Substance 3D Sampler: Substance 3D Sampler, formerly known as Substance Alchemist, is an application that allows artists to scan and convert real-world materials into digital materials suitable for 3D projects.

5. Substance 3D Stager: Substance 3D Stager is a 3D rendering and scene composition software. It enables users to import 3D models, apply materials, set up lighting, and create visually stunning renders and presentations.

Adobe Substance 3D aims to provide a comprehensive set of tools for 3D artists, game developers, product designers, and other professionals in the 3D industry. The applications within the suite are designed to work together seamlessly, enabling artists to create, texture, and render 3D assets efficiently.