Historically, many auxiliary tools were separate, but IDA 9.1 bundles most directly within the installer. IDA 9.1 | Hex-Rays Docs
The keyword "SDK and utilities" implies that you want to build. Here is a quick roadmap for developers: IDA Pro 9.1.250226 -Win Mac Lin ux- SDK and utilities
: IDB storage now uses zstd compression , significantly reducing database file sizes and speeding up save/load operations. Historically, many auxiliary tools were separate, but IDA 9