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groff (/ˈdʒiːrɒf/ JEE-roff) (also called GNU troff) is a typesetting system that creates formatted output when given plain text mixed with formatting commands. It is the GNU replacement for the troff and nroff text formatters, which were both developed from the original roff.
History & Standards
Explore the main themes, entities and connections around Groff (software). Start with the topic map, then use the sections below for research and deeper semantic analysis.
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the full topic structure. Each item opens a new analysis centered on that subject.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
See the strongest relationship patterns around the current topic before diving into the raw triples.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
groff troff gnu also standard original including free text typesetting unix software release nroff roff replacement developed systems macros james
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Groff (software) | Developer | GNU Project | 1.00 | infobox |
| Groff (software) | License | 2009: GPL-3.0-or-later[a] 1992: GPL-2.0-or-later[b] 1990: GPL-1.0-or-later[c] | 1.00 | infobox |
| Groff (software) | Original author | James Clark | 1.00 | infobox |
| Groff (software) | Release | June 1990; 36 years ago (1990-06) | 1.00 | infobox |
| Groff (software) | Repository | git.savannah.gnu.org/cgit/groff.git | 1.00 | infobox |
| Groff (software) | Stable release | 1.24.1 / 14 March 2026 | 1.00 | infobox |
| Groff (software) | Type | Typesetting | 1.00 | infobox |
| Groff (software) | Website | gnu.org/software/groff/ | 1.00 | infobox |
| Groff (software) | Written in | C++ | 1.00 | infobox |
| Linux | instance of | and UNIX derived operating systems | 0.80 | text |
| 4.4BSD derivatives | instance of | and UNIX derived operating systems | 0.80 | text |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.