Bless

Gtk# Hex Editor

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About

Bless is a binary (hex) editor, a program that enables you to edit files as a sequence of bytes. It is written in C# and uses the Gtk# bindings for the GTK+ toolkit.

Additional information

Project

Developer: Alexandros Frantzis
License: GPL-2.0-or-later (free software)What this license lets you do
Homepage: github.com/afrantzis/bless

Install

Available via: Flatpak · Arch Linux (2) · Fedora · openSUSE
All 5 packagings
Flathub (Flatpak), AUR, AUR (Git build), Fedora, openSUSE
Flatpak sandbox: Wide access
Runs in a sandbox, but a broad part of it is open — typical for tools that need to manage your files or system. It shows what the app is able to do, not what it does.
What it can access
Reads and changes your whole home folder
Uses the older X11 display system, which doesn't isolate windows from each other

About this data

Sources: 6 independent sources agree
Catalog data as of: October 12, 2026

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How each source lists it (5)

Source	Name	Version	Built by	License	Description
Flathub (Flatpak)	Bless	0.6.3	—	GPL-2.0-or-later	Gtk# Hex Editor
AUR	bless	0.6.3-2	—	GPL	High-quality, full-featured hex editor
AUR (Git build)	bless-git	r190.103fbd6-1	—	GPL2	High-quality, full-featured hex editor (git version)
Fedora	bless	0.6.3	Distribution build	GPL-2.0-or-later	High quality, full featured hex editor
openSUSE	bless	0.6.3	Distribution build	GPL-2.0-only	Gtk#-based Hex-editor written in C#