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RB is a file format used for storing software-related data in the RealBASIC development environment. It stores compiled applications and libraries, enabling developers to package their code into a usable file. RB files are often used for cross-platform development, particularly for macOS, Windows, and Linux systems.
MOBI is an ebook format used primarily by Amazon Kindle devices. It’s based on the open standard for digital publishing and allows for content reflow and support for images, links, and embedded fonts. MOBI files are widely used for ebook distribution and are compatible with various reading apps.