Forked from JWZ to add new releases beyond 2007.

Sources:
- GNU Emacs releases
- XEmacs releases
- SXEmacs releases

1976    TECMAC and TMACS
        a pair of "TECO-macro realtime editors."
        by Guy Steele, Dave Moon, Richard Greenblatt,
        Charles Frankston, et al.
          |
          |
1976    EMACS
        by Richard Stallman, Guy Steele,       EINE (EINE Is Not EMACS)
        and Dave Moon.                         by Dan Weinreb.
        Merger of TECMAC and TMACS, plus       for MIT Lisp Machine.
        a dynamic loader and Meta-key cmds.    First Emacs written in Lisp.
        Ran on ITS and TWENEX (Tops-20)                |
        written in TECO and PDP 10 assembly.           |
                                                       |
                                                       |
1978    Multics Emacs                         ZWEI (ZWEI Was EINE Initially)
        by Bernie Greenberg.                  by Dan Weinreb and Mike McMahon.
        written in MacLisp;                            |
        also used Lisp as its                          |
        extension language.                            |
1980                                         ZMACS (direct descendant of ZWEI)
                                             on Symbolics LM-2, LMI LispM,
                                             and later, TI Explorer (1983-1989)
1981               Gosling Emacs                       :
                   by James Gosling                    :
                   written in C; with "Mocklisp"
                   as its extension language.
                       /      |
1983                  /       |
                     /   Unipress Emacs (6-may-83)
                    /    $395 commercial product.
1984               /                                   Hemlock
                  /                                    by Bill Chiles,
                 /                                     Rob MacLachlan, et al.
1985  GNU Emacs 13.0? (20-mar-85)                      written in Spice Lisp
      by Richard Stallman.                             (CMU Common Lisp)
      initial public release?                              :
             |                                             :
      GNU Emacs 15.10 (11-apr-85)                          :
             |
      GNU Emacs 15.34 (07-may-85)
             |
      GNU Emacs 16.56 (15-jul-85)
      (Gosling code expunged
      for copyright reasons)
             |
             |
      GNU Emacs 16.60 (19-sep-85)
      (contained first patches from
      the net, including preliminary
      SYSV support)
             |
             |
      GNU Emacs 17.36 (20-dec-85)
      (included TeX manual; first
      version that worked on SYSV
      out of the box)
             |
             |
1986  GNU Emacs 18.24 beta (02-oct-86)
             |
1987  GNU Emacs 18.41 (22-mar-87)
             |
      GNU Emacs 18.45 (02-jun-87)
             |
      GNU Emacs 18.49 (18-sep-87)
             |   \
             |    \________________________________________________
             |                                                     \
             |                                                      \
             |                                           Early work on Epoch begins (1987)
             |                                           by Alan M. Carroll
1988  GNU Emacs 18.50 (13-feb-88)                                     |
             |                                                        |
      GNU Emacs 18.51 (07-may-88)                                     |
             |                                                        |
      GNU Emacs 18.52 (01-sep-88)                                     |
             |                                            Epoch 1.0 (14-dec-88)
             |                                            by Alan M. Carroll with Simon Kaplan
1989  GNU Emacs 18.53 (24-feb-89)                                     |
             |   \                                                    |
             |    \________________________________________________   |   _____
             |                                                        |        \
      GNU Emacs 18.54 (26-apr-89)                                     |         \
             |                                                        |          \
      GNU Emacs 18.55 (23-aug-89)                                     |           \
             |    |                                                   |            \
             |    |                                                   |     NEmacs 3.2.1 (15-dec-89)
             |    |                                                   |     "Nihongo Emacs": a fork
             |    |                                                   |     with multi-byte Japanese
             |    |                                                   |     language support.
             |    |                                                   |             |
             |    |                                       Epoch 2.0 (23-dec-89)     |
             |    |                                                   |             |
             |    |                                                   |             |
1990         |    |                                       Epoch 3.1 (06-feb-90)     |
             |    |                                                   |             |
             |    \                                                   |     NEmacs 3.3.1 (3-mar-90)
             |     \                                                  |             |
             |      \                                     Epoch 3.2 (11-dec-90)     |
             |       \                                    last Carroll release.     |
             |        \____ (sporadic work on                         |             |
             |               GNU Emacs 19 begins)                     |             |
             |                     |                                  |             |
             |                     |                                  |             |
             |                     |                      Epoch 4.0 (27-aug-90)     |
             |                     |                      Now maintained by NCSA.   |
             |                     |                                  |             |
1991  GNU Emacs 18.57 (??-jan-91)  |                                  |             |
             |                     |                                  |             |
      GNU Emacs 18.58 (??-???-91)  |                                  |             |
             |                     |                                  |             |
1992         |                     |___                               |     MULE 0.9.0b (4-mar-92)
             |                     |   \                              |     "Multilingual
             |                     |    \                             |     Enhancements to Emacs":
             |                     |     \                            |     support for input methods
             |                     |      \                           |     and various languages
             |                     |   Lucid Emacs 19.0 (??-apr-92)   |     including Japanese,
             |                     |   by Jamie Zawinski et al.       |     Chinese, Korean, Greek,
             |                     |      |                           |     Hebrew, and Cyrillic.
             |                     |   Lucid Emacs 19.1 (04-jun-92)   |             |
             |                     |      |                           |             |
             |                     |   Lucid Emacs 19.2 (19-jun-92)   |             |
             |                     |      |                           |             |
             |                     |   Lucid Emacs 19.3 (09-sep-92)   |             |
      GNU Emacs 18.59 (31-oct-92)  |      |                           |             |
             |                     |      |                           |             |
1993         |                    /    Lucid Emacs 19.4 (21-jan-93)   |             |
             |                   /        |                           |             |
             |                  /      Lucid Emacs 19.5 (05-feb-93)   |             |
             |                 /       (trade-show giveaway CD only)  |             |
             |                /           |                           |             |
             |   ____________/         Lucid Emacs 19.6 (09-apr-93)   |             |
             |  /                         |                           |             |
             | /                          |                           |             |
      GNU Emacs 19.7 beta (22-may-93)     |                          /|             |
      first public v19 beta               |                         / |             |
             |                            |                        /  |  ...___     |
      GNU Emacs 19.8 beta (27-may-93)     |                       /   |        \    |
             |        \                   |                      /    |         \   |
             |         \________________  |  ___________________/     |     MULE 1.0 (1-aug-93)
             |                          \ | /                         |     (based on GNU Emacs 18.59)
             |                         Lucid Emacs 19.8 (06-sep-93)   |             |
             |                         (Epoch merger, preliminary     |             |
             |                          I18N support)                 |             |
             |                            |                           |             |
      GNU Emacs 19.22 beta (28-nov-93)    |                           |             |
             |                            |                           |             |
1994         |                         Lucid Emacs 19.9 (12-may-94)  /              |
             |                         (scrollbars, Athena)         /               |
             |                            |                        /                |
      GNU Emacs 19.23 beta (17-may-94)    |                       /                 |
             |            \               |                      /                  |
             |             \____________  |  ___________________/                   |
             |                          \ | /                                       |
             |                         Lucid Emacs 19.10 (27-may-94)                |
             |                         last JWZ release.                            |
             |                            |                                         |
      GNU Emacs 19.24 beta (16-may-94)    |                                         |
             |                            |                               ...___    |
             |                            |                                     \   |
             |                            |                                      \  |
             |                            |                                 MULE 2.0 (6-aug-94)
             |                            |                                 (based on GNU Emacs 19.25)
             |                            |                                         |
             |                         XEmacs 19.11 (13-sep-94)                     |
             |                         Lucid Emacs -> XEmacs renaming.              |
             |                         now maintained by Chuck Thompson             |
             |                         and Ben Wing.                                |
             |                            |                                         |
      GNU Emacs 19.27 beta (14-sep-94)    |                                         |
             |                            |                                         |
      GNU Emacs 19.28 (01-nov-94)         |                                         |
      first official v19 release.         |                               ...___    |
             |                            |                                     \   |
             |                            |                                      \  |
             |                            |                                 MULE 2.2 (28-dec-94)
             |                            |                                 (based on GNU Emacs 19.28)
             |                            |                                         |
             |                            |                                         |
1995         |                            |                                 MULE 2.3 (24-jul-95)
             |                            |                                         .
             |                         XEmacs 19.12 (23-jun-95)                     .
             |                         (tty support)    \                           .
      GNU Emacs 19.29 (21-jun-95)         |              \                          .
             |                            |        (work on 20.x begins)            .
      GNU Emacs 19.30 (24-nov-95)         |               :                         .
             |           \                |               :                         .
             |            \_____________  |                                         .
             |                          \ |                                         .
             |                         XEmacs 19.13 (01-sep-95)                     .
1996  GNU Emacs 19.31 (25-may-96)         |                                         .
             |                         XEmacs 19.14 (23-jun-96)                     .
      GNU Emacs 19.34 (21-aug-96)         |                   \                     .
1997         |                         XEmacs 20.0 (09-feb-97) \                    .
             |                         now maintained by        \                   .
             |                         Steve Baur.               |                  .
             |                            |           XEmacs 19.15 (26-mar-97)      .
             |                            |                      |                  .
             |                         XEmacs 20.1 (15-apr-97)   |                  .
             |                            |                      |                  .
             |                         XEmacs 20.2 (16-may-97)   |                  .
      GNU Emacs 20.1 (17-sep-97)          |                      |                  .
             |                            |                      |                  .
      GNU Emacs 20.2 (20-sep-97)          |                      |                  .
             |                            |           XEmacs 19.16 (31-oct-97)     .
             |                            |                                       .
             |                         XEmacs 20.3 (21-nov-97)                   .
             |                            |                                     /
             |                            |    ________________________________/
             |                            |   /
             |                            |  /
1998         |                         XEmacs 20.4 (28-feb-98)
             |                         first reasonably stable
             |                         release with MULE support.
             |                         XEmacs "core" and "packages"
             |                         now packaged separately.
             |                            |
             |                            |
             |                         XEmacs 21.0-pre5 (18-jul-98)
             |                         Numbering scheme goes wonky due to
             |                         switch to stable + unstable branches.
      GNU Emacs 20.3 (19-aug-98)          |
             |                            |
             |                         XEmacs 21.0.60 (10-dec-98)
             |                           /  \___________________
             |                          /                       \
1999         |                         /             XEmacs 21.2.9 (03-feb-99)
             |                        /              (trunk / unstable branch)
             |                       /                           |
             |                XEmacs 21.1.3 (26-jun-99)          |
             |                (stable / maintenance branch)      |
             |                maintained by Vin Shelton.         |
             |                       |                           |
      GNU Emacs 20.4 (12-jul-99)     |                           |
             |                       |                           |
2000         |                       |               XEmacs 21.2.27 (18-jan-00)
             |                       |                           |
             |                XEmacs 21.1.9  (13-feb-00)         |
             |                       |                           |
      GNU Emacs 21.1 (28-oct-01)     |               XEmacs 21.2.36 (04-oct-00)
             |                       |                           |
2001         |                XEmacs 21.1.14 (27-jan-01)         |
             |                (branch retired)                   |
             |                                       XEmacs 21.2.40 (08-jan-01)
             |                             ____________________/ |
             |                            /                      |
             |                           /           XEmacs 21.5.0  (18-apr-01)
             |                          /            (trunk / unstable branch)
             |                         /                         |
             |                XEmacs 21.4.0  (16-apr-01)         |
             |                (stable / maintenance branch)      |
             |                Maintained by Stephen Turnbull.    |
             |                Shipped by Red Hat, Debian,        |
             |                Mandrake, etc.                     |
             |                        |                          |
2002  GNU Emacs 21.2 (18-mar-02)      |              XEmacs 21.5.6  (05-apr-02)
             |                        |                          |
             |                XEmacs 21.4.7  (04-may-02)         |
             |                        |                          |
2003         |                XEmacs 21.4.12 (16-jan-03)         |
             |                first "stable" 21.4                |
             |                        |                          |
      GNU Emacs 21.3 (24-mar-03)      |                          |
             |                        |                          |
             |                XEmacs 21.4.13 (26-may-03)         |
             |                maintained by Vin Shelton.         |
             |                        |                          |
             |                        |              XEmacs 21.5.14 (02-jun-03)
             |                        |                          |
             |                XEmacs 21.4.14 (07-sep-03)         |
             |                        |                          |
             |                        |              XEmacs 21.5.16 (26-sep-03)
2004         |                        |                          |
             |                XEmacs 21.4.15 (03-feb-04)         |
             |                        |                          |
             |                        |              XEmacs 21.5.18 (22-oct-04)
             |                        |                          |
             |                XEmacs 21.4.16 (11-dec-04)         |
             |                        | \_____________________       _______________
2005         |                        |                          |                  \
             |                XEmacs 21.4.17 (06-feb-05)         |                   \
             |                        |                          |                    \
      GNU Emacs 21.4a (08-feb-05)     |              XEmacs 21.5.19 (18-feb-05)        \
             |                        |                          |                     |
             |                        |              XEmacs 21.5.23 (26-oct-05)        |
             |                        |                          |                     |
             |                XEmacs 21.4.18 (05-dec-05)         |                     |
             |                        |                          |                     |
             |                        |              XEmacs 21.5.24 (19-dec-05)        |
             |                        |                          |                     |
2006         |                XEmacs 21.4.19 (30-jan-06)         |                     |
             |                        |                          |                     |
             |                        |                          |                     |
             |                        |                          |                     |
             |                XEmacs 21.4.20 (10-dec-06)         |          SXEmacs 22.1.6 (06-dec-06)
             |                        |                          |                     |
2007         |                        |                          |                     |
      GNU Emacs 22.1 (03-jun-07)      |              XEmacs 21.5.28 (21-may-07)        |
             |                        |                          |                     |
             |                        |                          |          SXEmacs 22.1.7 (24-aug-07)
             |                        |                          |                     |
             |                XEmacs 21.4.21 (10-nov-07)         |                     |
             |                        |                          |                     |
2008         |                        |                          |                     |
      GNU Emacs 22.2 (26-mar-08)      |                          |          SXEmacs 22.1.8 (01-feb-08)
             |                        |                          |                     |
             |                        |                          |          SXEmacs 22.1.9 (06-jun-08)
      GNU Emacs 22.3 (05-sep-08)      |                          |                     |
             |                        |                          |                     |
2009         |                XEmacs 21.4.22 (30-jan-09)         |                     |
             |                                                   |           SXEmacs 22.1.10 (12-may-09)
             |                                       XEmacs 21.5.29 (19-may-09)        |
      GNU Emacs 23.1 (29-jul-09)                                 |                     |
             |                                                   |                     |
2010         |                                                   |                     |
      GNU Emacs 23.2 (08-may-10)                                 |                     |
             |                                                   |                     |
             |                                                   |          SXEmacs 22.1.12 (04-nov-10)
2011         |                                                   |                     |
      GNU Emacs 23.3 (10-mar-11)                                 |          SXEmacs 22.1.14 (13-mar-11)
             |                                       XEmacs 21.5.30 (27-apr-11)        |
             |                                                   |                     |
2012  GNU Emacs 23.4 (29-jan-12)                                 |                     |
             |                                                   |                     |
      GNU Emacs 24.1 (10-jun-12)                                 |          SXEmacs 22.1.15 (16-jun-12)
             |                                                   |                     |
      GNU Emacs 24.2 (27-aug-12)                     XEmacs 21.5.32 (02-aug-12)        |
             |                                                   |                     |
2013         |                                       XEmacs 21.5.33 (04-jan-13)        |
      GNU Emacs 24.3 (11-mar-13)                                 |                     |
             |                                       XEmacs 21.5.34 (01-may-13)        |
             |                                                   |                     |
2014         |                                                   |                     |
             |                                                   |                     |
      GNU Emacs 24.4 (20-oct-14)                                 |                     |
2015         |                                                   |                     |
      GNU Emacs 24.5 (10-apr-15)                                 |                     |
             |                                                   |                     |
2016         |                                                   |                     |
             |                                                   |                     |
             |                                                   |          SXEmacs 22.1.16 (06-may-16)
      GNU Emacs 25.1 (17-sep-16)                                 |                     |
             |                                                   |                     |
2017         |                                                   |                     |
      GNU Emacs 25.2 (21-apr-17)                                 |                     |
             |                                                   |                     |
      GNU Emacs 25.3 (11-sep-17)                                 |                     |
2018         |                                                   |                     |
      GNU Emacs 26.1 (28-may-18)                                 |                     |
2019         |                                                   |                     |
      GNU Emacs 26.2 (12-apr-19)                                 |                     |
             |                                                   |                     |
      GNU Emacs 26.3 (28-aug-19)                                 |                     |
2020         |                                                   |                     |
             |                                                   |                     |
      GNU Emacs 27.1 (11-aug-20)                                 |          SXEmacs 22.1.17 (02-sep-20)
2021         |                                                   |
      GNU Emacs 27.2 (25-mar-21)                                 |
2022         |                                                   |
      GNU Emacs 28.1 (04-apr-22)                                 |
             |                                                   |
      GNU Emacs 28.2 (12-sep-22)                                 |
2023         |                                                   |
             |                                       XEmacs 21.5.35 (13-may-23)
      GNU Emacs 29.1 (30-jul-23)
2024         |
      GNU Emacs 29.2 (18-jan-24)