Hex Fiend

Hex Fiend is a hexadecimal editor designed for rapid inspection and modification of binary files. It loads large files efficiently, allowing users to navigate and edit data without the performance penalties typical of many editors. The interface presents raw byte values alongside their ASCII representations, supporting common operations such as search, replace, and data interpretation in multiple numeric bases.

Targeted at developers, reverse engineers, and anyone needing to examine binary structures, the tool offers features like undo/redo, multi‑cursor editing, and the ability to work with multiple files simultaneously. Its open‑source nature means the source code is publicly available, and it is distributed under a free‑tier license, enabling unrestricted use and community contributions.

The project is marked as stable, indicating that core functionality has matured and is maintained with regular updates. Users can obtain the latest version from the official website at https://hexfiend.com.