Analyse and edit binary files wherever you want, on any operating system, whether on a desktop or smartphone, and without installing any software. All you need is a modern web browser (Mozilla Firefox 79+, Google Chrome 66+, Opera 53+, Apple Safari 12.1+, Microsoft Edge 79+).

The complete file processing is done by your browser and HTML5 functionality. HexEd.it does not upload your data to the server.

HexEd.it has a small memory footprint - it does not keep your files in memory. This makes it possible to handle very large files even on low-RAM machines. HexEd.it has been tested on files as large as 150 GiB.

A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM. Full featured hex editor. Byte patching. Patch management. Copy and paste byte sequences. String and hex pattern highlighting. Pattern matching DSL. Huge file support. Can disassemble 16 different architectures' code and counting.

fq is inspired by the well known jq tool and language and allows you to work with binary formats the same way you would using jq. In addition it can present data like a hex viewer, transform, slice and concatenate binary data. It also supports nested formats and has an interactive REPL with auto-completion.

It was originally designed to query, inspect and debug media codecs and containers like mp4, flac, mp3, jpeg. Since then it has been extended to support a variety of formats like executables, packet captures (including TCP reassembly) and serialization formats like JSON, YAML, XML, ASN1 BER, Avro, CBOR, protobuf.

In summary it aims to be jq, hexdump, dd and gdb for files combined into one.

Omnivore is a cross-platform app for modern hardware (running linux, MacOS and Windows) to work with executables or media images of Atari 8-bit, Apple ][+, and other retrocomputer machines and game consoles.

hexyl is a simple hex viewer for the terminal. It uses a colored output to distinguish different categories of bytes (NULL bytes, printable ASCII characters, ASCII whitespace characters, other ASCII characters and non-ASCII).

DroiD64 is a graphical file manager for the contents of D64, D67, D71, D80, D81, D82, D88, T64 and LNX files. Examine your disk images in a fine-grained way to see what's in there.

A binary editor written in Go that tries to act like vim. Text based. Portable. Insert/replace/delete individual bytes. Implements internal search.

A hex editor that uses the QT toolkit for editing very, very large files - files larger than the amount of RAM in your system, in fact. Very useful.

Upload a file to this site and it not only takes the file apart like a hex editor, but it also implements a number of different visualization techniques that translate the binary into visual pictures. The visual feedback is highly useful in the process of reverse engineering, because people's brains just weren't wired to read hex.