LyX

LyX is a document processor for writers who want to organize work by structure while using TeX and LaTeX capabilities through a graphical interface. It is a particularly good fit for academic, technical, and long-form writing; readers who want a conventional word processor without TeX-related setup should look elsewhere.

Overview

LyX covers an unusually broad range of structured documents, from articles, theses, and books to letters, novels, plays, and film scripts. Its focus on structure rather than page-by-page formatting makes it most compelling when a document has complex sections, references, or specialized notation—not for everyday writing that needs only basic word processing.

It is free GPL software with offline editing and desktop apps for Linux, Windows, and macOS. The project accepts donations, and its homepage lists LyX 2.5.3, released September 17, 2026. The project also provides GPG-signed source tarballs and binaries, giving users a way to verify downloaded packages.

Key features

Equations and scholarly apparatus

The equation editor supports both point-and-click input and LaTeX commands, with formulas rendered on screen. That pairing is useful for writers who want visual feedback without giving up command-based entry. Labels, references, indexes, and advanced BibTeX support make LyX a stronger option for articles, theses, and books with substantial cross-referencing or bibliographies.

Formats, scientific tools, and collaboration in a larger workflow

Configurable converters import and export formats including LaTeX, PDF, PostScript, DVI, ASCII, HTML, OpenDocument, RTF, and MS Word. That breadth helps when a document needs to move between technical and more familiar formats, though it does not make LyX a general-purpose publishing service. Basic support for Maple, Maxima, Octave, and Mathematica, with modules for Noweb, Sweave, and LilyPond, extends its appeal to some scientific and technical workflows.

LyX supports external version-control systems including RCS, CVS, Subversion, and Git, and includes track changes. Those capabilities suit writers managing revisions alongside an existing version-control process. Multilingual documents, right-to-left writing, CJK writing systems, and Unicode support broaden its usefulness across languages and scripts.

Pricing

LyX costs nothing under its GPL license. The free software includes offline editing and desktop apps; there is no paid tier or free-trial period to weigh. The project accepts donations to support development.

Platforms

LyX has desktop versions for Linux, Windows, and macOS. Windows installations require a TeX distribution, and Mac installations require a TeX system such as MacTeX. That additional setup is a meaningful drawback for those platforms, while Linux users should still choose LyX for its document workflow rather than assume it will behave like a conventional word processor.

Who it's for

Choose LyX if your work depends on structured documents, equations, bibliographies, or cross-references, or if you write books and scripts alongside academic material. It is less suitable for writers who prioritize a conventional word-processing workflow or want to avoid installing a TeX system on Windows or Mac.

Pros and cons

• Pro: Point-and-click equations and LaTeX command entry serve both visual and command-oriented math workflows.
• Pro: Advanced BibTeX, labels, indexes, and references support documents with extensive scholarly apparatus.
• Pro: Broad import and export formats ease exchange with technical and office-document workflows.
• Pro: Free GPL licensing, offline editing, and Linux, Windows, and macOS desktop apps keep access broad.
• Con: Windows and Mac users need a separate TeX system, adding installation work before writing.
• Con: Its structure-centered approach is a poor fit for people seeking only a familiar, conventional word processor.

Alternatives

For screenwriting teams seeking cloud-based script editors and real-time collaboration, Celtx offers a free studio limited to one project. WriterDuet is another option for script writing, with a free plan capped at three projects and a paid Plus plan that includes unlimited projects, real-time collaboration, and a desktop application.

Campfire offers a free tryout with limited access to writing and worldbuilding modules and no credit card required. For browser-based LaTeX work, Overleaf has a free plan with unlimited projects and one collaborator per project. Story Architect is an open-core alternative whose core source is available under MIT while some features are closed source and commercial.

Substack suits writers publishing through a platform with no platform fees, tiers, or contracts on its free-to-start plan. Write.as offers a free personal blog with branding and a daily post limit, but its free plan is closed for now. HackMD is a browser-based choice with a free plan capped at three teammates and other collaboration and publishing quotas.

Browse more options in Writing Apps, LaTeX Editors, or Word Processing Software.

Verdict

LyX is a strong choice for academic and technical writers, and for other authors whose documents benefit from structure, equations, references, and flexible output. Its GPL license and deep writing tools are persuasive reasons to choose it; the extra TeX setup on Windows and Mac and its less conventional workflow are the clearest reasons to look elsewhere.