Okteta review
A capable open-source Linux hex editor with structure-aware analysis and editing.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Okteta is an open-source desktop hex editor from KDE for viewing and editing file data at the byte level. It suits Linux users who need to inspect raw bytes, navigate binary content, search for byte sequences or text, and make controlled edits. The interface supports hexadecimal, decimal, octal, and binary representations, with editing and navigation comparable to a text editor. Multiple open files, configurable data views, and undo and redo support make it suitable for examining several files during the same work session.
Its standout capability is structure-based binary analysis and editing. Okteta can work with byte arrays through user-created XML or JavaScript structure definitions, allowing users to describe and inspect structured binary data instead of relying only on a flat byte view. That makes it a stronger fit for users who understand the format they are examining and want structure-aware workflows. Binary filtering, string extraction, byte statistics, checksum calculation, and hash calculation add practical analysis tools around the editor.
Okteta’s scope is focused: it is a Linux desktop tool for byte-level inspection and editing, rather than a cross-platform application or a broader development environment. Its structure features also depend on creating or obtaining suitable XML or JavaScript definitions, so they may require technical preparation for format-specific work. Choose Okteta if Linux support, multiple byte representations, and customizable structure analysis are priorities. Choose another tool if you need Windows or macOS availability, built-in structure definitions for a specific format, or AI-assisted functionality.
Okteta pros and cons
- Where it wins
- Supports hexadecimal, decimal, octal, and binary byte views
- Analyzes and edits structures with XML or JavaScript definitions
- Includes filtering, string extraction, statistics, checksums, and hashes
- Where it doesn't
- Available on Linux rather than multiple desktop platforms
- Structure workflows require user-created XML or JavaScript definitions
- Does not include AI-assisted features
Okteta fact sheet, pricing and score →
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