HexEd.it
7.3#2 in hex editorsFree planFree planAndroidiOSWebAPI
VisitHexEd.it suits people who need to inspect or edit binary files in a browser, including offline after the first visit. Its file-format decoding and hash lookup may help with file analysis.
Hextor is for Windows users who need to inspect or edit hexadecimal and binary data, including disks or process memory. Its license also permits commercial use.