
Description: Kaitai Struct is an open-source binary data parsing language and library for parsing complex file formats. It allows developers to describe file formats and then generate code in different target languages to easily read and process those formats.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: FlexHex is a cross-platform hex editor for viewing, editing, analyzing, and comparing binary files. It includes features like tabs, multiple data views, undo/redo, powerful search and replace tools, checksums/hashes, insertion of byte patterns, offset manager, data inspector, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API