1.  Source code

The source code of the current LyX release (version 2.2.3) can be found here in tar.gz format, with the signature file here. The package can also be downloaded in tar.xz format, with the signature here.

If you don't know what source code is, see the article in Wikipedia. Information on how to verify the tarballs using the signature can be found here.

2.  LyX installers (binary versions)

Binary versions of LyX for installing in different operating systems can be found below or on the FTP site. The binaries are also gpg-signed.

2.1  Windows binaries (Windows 7 and later)

There are 2 Windows installer variants:

  • Bundle: LyX-223-Bundle-2.exe (~261 MB)
    Download this one if you are a new user. It installs a fully functional and complete LyX setup including a LaTeX distribution and a bibliography manager. (GPG signature)
  • Installer: LyX-223-Installer-2.exe (~52 MB)
    Download this one if you already have an older version of LyX installed and you want to update it. This installer requires that LaTeX (MikTeX or TeXLive) already be installed. (GPG signature)

A binary for Cygwin can be downloaded here: lyx-2.2.3-cygwin.tar.gz.

In case the links above does not work, try this mirror. If the download is too slow try some other mirror closer to you.

For more information about LyX for Windows, see our wiki page.

2.2  Mac OS X binaries

LyX for Mac OS X is available here: LyX-2.2.3+qt5-x86_64-cocoa.dmg, and the GPG signature is here. Please note that this package replaces the original 2.2.2 binary for x86, due to problems in that build.)

There is also a package for some older systems: LyX-2.2.3+qt4-i386-carbon.dmg, with the GPG signature here.

Before you install LyX you need to install a TeX system such as MacTeX.

In case the links above do not work, try this mirror. If the download is too slow try some other mirror closer to you.

On Mac OS X Mountain Lion you'll get the error message: "LyX" can't be opened because it is from an unidentified developer. See the explanation here for a work around.

See the LyX/Mac wiki page for further installation tips.

2.3  Linux binaries

Major Linux distributions take care of LyX binaries themselves and you will find LyX in their repositories. For more details about your distribution look in our wiki.

For Ubuntu users, Liviu Andronic maintains a stable PPA (Personal Package Archive) and a daily PPA which contain up-to-date versions of LyX. See the LyX on Ubuntu wiki page for information and instructions.

The versions of LyX on a variety of Linux distributions (as shipped with the vanilla distribution) can be seen on the snippet below. Note, however, that most distributions provide newer versions than the listed ones via upgrade services.

2.4  OS/2 binaries

LyX has unofficial ports to OS/2, binaries are here (LyX 2.0.7).

2.5  Haiku binaries

LyX has unofficial ports to Haiku, packages (2.1.x,2.0.0,2.2.3) can be found in Haiku package repositories.

3.  Additional Software

If you're not using one of the installers or packages, you may need to install some additional software.

4.  Version numbers

There are certain rules how the LyX version numbers are assigned. Read the following page for detailed information.

5.  Previous versions

6.  Mirrors

Please use one of the ftp mirrors below in case ftp://ftp.lyx.org (located in France) is slow or down.

7.  Checksums & signing

We provide gpg-signed tarballs and binaries. Our GPG key ID is 0xDE7A44FAC7FB382D (LyX Release Manager). The signatures are found next to the tarballs and binaries.

  • To initially import our key via GnuPG, do this:
    gpg --recv-keys FE66471B43559707AFDAD955DE7A44FAC7FB382D

Attention: Please be careful to use this full fingerprint, spoofed version of shortened fingerprint is already in the wild and it is easy to make new fake ones!

  • After that, each time you need to verify a tarball:
    gpg --verify lyx-2.2.3.tar.gz.sig

to check the signature (or any other signed file you want to verify). Watch out for the "Good signature..." string.

8.  Development versions

Please do not use these for any serious work! They are only provided for testing and development purposes.