The Hacker’s Notebook
The Hacker’s Notebook: A free, cross-platform toolkit for byte-level ROM work and address notes. Ranked #17 of 49 in ROM Hacking Tools by our editors (5.8/10); pricing: Free plan; best for byte-level ROM editing and patch documentation.
At a glance
- Editor score5.8 / 10
- PricingFree plan
- Best forByte-level ROM editing and patch documentation
- Free planYes
- Paid fromNone
- ROM editingYes
- Facts checked5 Oct 2026
Where it wins
- Combines a hex editor with character, palette, and graphics views
- Creates patches and supports applying or reversing them
- Bookmarks ROM addresses in searchable, sortable documentation entries
Where it doesn't
- The project is described as early alpha
- General-purpose scope may not suit game-specific workflows
- Patch-format requirements may limit fit for some projects
Our verdict on The Hacker’s Notebook
The Hacker’s Notebook is an early-alpha desktop program for exploring and documenting game ROMs. Its intended audience is solo ROM hackers who want byte-level editing alongside ways to inspect and annotate ROM data. A hex editor handles byte-level work, while table-based character views, palette/color tools, and graphics views provide other ways to examine ROM contents. The project presents itself as a general ROM hacking tool rather than one focused on a particular game or series.
Its editing and documentation features are closely connected: users can create documentation entries that serve as bookmarks to ROM addresses, then search and sort those entries. That makes the tool relevant to projects where recording locations matters alongside changing data. Patch creation, application, and reversal extend the workflow from inspection to distributing or undoing ROM changes. These functions give the product a broader role than a standalone hex editor, while keeping its focus on ROM editing and related notes rather than a wider game-development environment.
The project is free and open source under GPL-3.0, with desktop builds intended for Windows, macOS, and Linux. Its early-alpha status is an important qualification for anyone considering it for an established workflow. The product description does not identify a particular supported game or series, so users seeking game-specific editing should compare it with tools built around their target title. Patch workflows also merit checking against a project's format needs before adoption. The Hacker’s Notebook is a reasonable fit for solo users who value byte-level views, patch handling, and address documentation together; those who need mature, game-specific tooling may prefer a more targeted alternative.
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The Hacker’s Notebook pricing
The Hacker’s Notebook fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| ROM editing | Yes |
| Patch formats | Not verified |
| Tile/sprite editing | Yes |
| Hex editor | Yes |
| Supported platforms | Windows, macOS, Linux (cross-platform desktop intent stated; individual OS list not specified) |
| Game scope | Multiple games |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Built for | Solo (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 5 Oct 2026 |
Alternatives to The Hacker’s Notebook
- YY-CHRA focused Windows dot editor for viewing and editing graphics in retro-game ROMs.8.4
- NUPSA free Windows desktop utility focused on creating and applying UPS patches.7.3
- HxDA broad Windows hex editor for binary work, rather than a ROM-specific hacking suite.7.2
See all The Hacker’s Notebook alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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