Dave Kerr is a software publisher focused on developer tooling for the Microsoft Windows ecosystem, offering a compact catalog of two related packages centered on SharpShell, an open-source framework designed to make it easy to create Windows Shell Extensions using the .NET Framework. SharpShell addresses a long-standing challenge in Windows development: shell extensions were traditionally difficult to build because they required unmanaged C++ code and complex COM interop, and for many years Microsoft actively discouraged writing them in managed code. SharpShell solves this problem by providing a stable, well-tested managed infrastructure that handles the underlying COM registration and interop plumbing, allowing developers to implement extensions entirely in C# or another .NET language by simply inheriting from provided base classes. Typical use cases include building context menu handlers that add custom commands to the right-click menu in Windows Explorer, creating icon overlays that display status information over file and folder icons, developing thumbnail and preview handlers for custom file formats, implementing property sheet extensions, and adding infotip or column handlers that enrich how files are presented in the shell. The second package in the catalog, the SharpShell Server Registration Manager, complements the core framework by streamlining the deployment and registration process, which is otherwise a tedious and error-prone step when installing shell extension servers on target machines. Together, these products serve software developers, independent vendors, and enterprise IT teams who need to integrate custom functionality directly into the Windows Explorer experience without wrestling with low-level native code. The catalog reflects a specialized but valuable niche: lowering the barrier to entry for professional-quality Windows shell integration using familiar .NET tooling.