Bless
Open-source Gtk# hex editor for binary files
At a glance
- Editor scoreNot yet scored
- PricingFree plan
- Best forLinux and Windows users wanting extensible basics
- Free planYes
- Paid fromNone
- Facts checked21 Sep 2026
Where it wins
- Edits large binary files and raw disks or block devices
- Multilevel undo/redo, search, tabs, and customizable data views
- Plugin support plus multithreaded search and save operations
Where it doesn't
- Scripting is described as a planned feature, not a current one
- The latest documented version is 0.6.3 from 2020
- Primarily targets GNU/Linux, with Win32 support also documented
Our verdict on Bless
Bless is a free, open-source desktop hex editor for editing files as sequences of bytes. It is aimed at Linux and Windows users who need practical binary editing, including large data files and raw disks or block devices. Its core workspace includes multiple tabs, customizable data views, find and replace, copy and paste, conversion tools, and multilevel undo and redo. Text and HTML export also make it useful when byte-level work needs to be shared in a more readable format.
For day-to-day editing, Bless covers a broad set of fundamentals without adding a license cost. Multithreaded search and save operations are suited to larger files, while raw disk and block-device editing supports lower-level workflows. Plugin extensibility gives technically inclined users a way to expand the editor beyond its built-in functions. The project is written in C# with Gtk#, primarily targets GNU/Linux, and documents support for Win32 and other platforms.
The main trade-off is scope around automation and project activity. Scripting is described as a planned feature rather than a current capability, so users who need script-driven transformations should consider a tool with scripting already available. The latest documented version is 0.6.3 from 2020, and the Releases page currently shows no releases. Bless fits users who value open-source basics, large-file handling, raw-device access, and plugins. It is less suitable for workflows centered on scripting or a newer release cadence.
Bless pricing
Bless fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Supported platforms | linux, windows |
| Binary comparison | Not verified |
| Binary templates | Not verified |
| Scripting support | No |
| Plugin support | Yes |
| Disk editing | Yes |
| Deployment | Desktop |
| Platforms | Linux, Windows |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 21 Sep 2026 |
Alternatives to Bless
- ImHexImHex packs advanced binary analysis, editing, and inspection into a free cross-platform desktop tool.—
- 010 EditorA deep cross-platform editor for structured binary work, debugging, and disk analysis.8.0
- Hex Editor NeoA broad free Windows toolkit for binary editing, analysis, comparison, and recovery work.—
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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