An early / beta release of dasher is now available on the Android
Market, or from the download page.
This stable release features a new two-push, one button, dynamic mode;
easier switching between alphabets; and many internal simplifications
and bug fixes.
This fixes a nasty bug which caused crashes when navigating exactly
Users of Hebrew and Japanese Dasher under MS Windows should notice an
Another piece of free software from the Dasher team!
Tapir - a simple 12-key disambiguating keyboard.
By Piotr Zielinski.
Tue 9/5/06: Dasher version 4 launched.
Tue 7/2/06 EyeTech Digital Systems (Quick Glance) are featuring
Dasher in their email newsletter.
Turkish training text provided by Bulent Celasun
now on the Dasher Download page.
Thu 26/1/06: We are proud to announce the
- making a free gazetracker based on the `VIM' work of Ollie Williams and
Fri 4/11/05: Dasher for the blind
-- an all new demonstration program by David MacKay is
available at the new
Keith Vertanen's Speech Dasher prototype is available for windows.
The idea of Speech Dasher is, you speack your text
and use a speech recognition
system first, then you use Dasher to correct the bad guesses of
the speech recognizer.
To install, you just need to extract the zip file and then run the
SpeechDasher.exe file. It will default to using the Microsoft SAPI
recognizer, to use Dragon you need to go change this in the Options->Speech
Options menu. It should work with Dragon 7 or 8.
There is now a training text for
on the download page.
New colour scheme
intended for red/green colour blind people
Sat 16/7/05: Dasher working in Korean -
for this to work, you need a font that understands how to combine the elementary
vowels and consonants of Korean into the syllable characters.
This works in Dasher 3.2 under linux (Ubuntu operating system) if you select one of the
korean fonts. (Apparently microsoft windows is behind linux
on this: MS's korean fonts do not do combining.)
For this version of Korean you need
this alphabet file
and a training text that is
in DECOMPOSED form
like this one. [We need a bigger training text!]
You can decompose
a regular "combined" korean text
by using (eg)
decompose.pl korean.txt training_korean_KR.txt
Thanks to Son Yeoyoung and Matthew Parker for help.
We plan another version of Korean, using
when Dasher 4.0 is released (October 2005).
Simon Judge demonstrated Dasher
at the Schoolforge-UK FLOSSIE conference and it was very
Sat 16/7/05: Dasher working in Persian
New project idea, suggested by
a visitor from the the NLM foundation --
could Dasher be useful for hyperlexic people who do not communicate verbally?
Iain Murray pointed out this video game
SF Cave (which works in your
a lot like one-button mode of Dasher. In fact what it's most like
is the now-abandoned metronome mode. (The button in SF cave determines
the acceleration, rather than the velocity.)
Anyone for Runic?
Would you like it to be easier to distinguish between
the apostrophe (') and comma (,) in Dasher?
latest alphabet for English, we have introduced two
we render the apostrophe in the dasher display using ⍘ (an underlined
apostrophe) by specifying this
<s b="105" d="⍘" t="'" note=" apostrophe"/>
(2) we have coloured all the parenthesis and quote-like characters
in shades of magenta, and all the
comma and full-stop like characters in shades of slate blue.
At the same time, we have added a TAB character, shown by a diamond (◊),
to the English alphabet.
We've coloured its square white/grey, like the other space-like characters.
Here is the alphabet entry.
<s b="9" d="◊" t="	" note="TAB (represented by a diamond)"/>
We have made the same changes in the following alphabets:
French with combining characters
It would be great if users could let us know if these enhanced alphabets give any
Alphabets and training texts for
New Korean nested alphabet for 2350 syllables
Two-button Menu Dasher and three-button Direct Dasher: User Trials by Ingrid
Dasher now working fine in Arabic.
Enhanced eyetracking mode
In the latest windows release, enhanced eyetracking mode
improved dynamics for easier un-zooming;
automatic calibration of the eyetracker, correcting systematic
errors in the y-coordinate.
Movies demonstrating this enhancement are going on the
For people who want to play with Dasher's PPM module:
Here is a link to an example program which uses PPM without the rest of
Dasher. You'll need to get the Dasher source tree from CVS and put the
files from the zip in a subdirectory below the 'Src' directory.
(by Keith Vertanen)
Dasher's PPM model is now available in convenient COM packaging. The DLL,
test harness, and source code is available at
The COM object's API is documented in ProbModel_API.txt. Let me know if you
find any problems.
Mon 27/10/03. Version 3.2 is ready.
This page has information
A new way
of using Dasher has been created: a breath mouse moves the mouse up
and down the screen as your breath is in and out respectively.
In the first trials, an expert Dasher user achieved ten words per minute
by breath alone.
More control mode development (Fri 25/7/03)
Application control mode is now fully integrated into the Unix code,
and is almost complete in the Windows version. We hope to make a new
release including this code shortly, but you can check out the CVS
version to try it now.
International Phonetic Alphabet (Sat 12/7/03)
With an appropriate XML file, Dasher works
in the International Phonetic Alphabet (screenshot
If anyone can advise us on how to make this feature useful
to users of phonetics, please let us know.
Gnome application control (Sun 22/6/03)
The current CVS version contains code that allows applications to be
controlled from within Dasher. Take a look at this screenshot
order to see Dasher being used to enter text into a word processor -
the bold mode was switched on and off entirely within Dasher. Code to
add the same functionality to the Windows version is currently being
Beta version of Dasher for MacOS X (Tue 10/6/03)
A beta release of Dasher for MacOS X has been made. This version is
still under development and so may behave unpredictably, crash, eat
your files or be generally miserable. Download it from the download page
. Thanks to Doug Dickinson and
Iain Murray for their work on this port! Click here
Dasher support IRC channel (Fri 2/5/03)
There is now an IRC channel for Dasher support and development issues. Simply
connect to irc.freenode.org and join #dasher.
Palm developer volunteers wanted (Thu 1/5/03)
A port of Dasher to the Palm has been impractical up until fairly recently due to the low refresh rate of the screens and relatively slow processor More recent hardware solves both of these problems, so we're looking for volunteers to look at porting Dasher to PalmOS. If you're interested, please contact Matthew Garrett at dasher[AT]mrao.cam.ac.uk
Anonymous CVS access now available (Thu 1/5/03)
Anonymous CVS access to the Dasher development tree is now available. To
download the current source, run
cvs -d :pserver:firstname.lastname@example.org:/home/cvsroot/dasher login
and press enter at the prompt. Now run
cvs -z3 -d :pserver:email@example.com:/home/cvsroot/dasher \
co -r stable30 dasher3
and the CVS tree will be downloaded.
MacOS X port in progress (Thu 1/5/03)
Thanks to Doug Dickinson and Iain Murray, an experimental version of Dasher
is now running under MacOS X.
Dasher 3.0.2 released (Tue 8/4/03)
Dasher 3.0.2 has been released. This version includes the following changes:
- Fixed bug regarding acceleration at edges of the window
- Introduced keyboard control mode (intended for switch use)
- GTK2 interface for the Unix version
Get it now from the download page
Dasher 3.0.1 released (Tue 18/3/03)
Dasher 3.0.1 has been released. This version includes the following changes:
- Improved prediction
- One dimensional input mode
- Increasable font size
- Various other bug fixes and feature enhancements
Get it now from the download page
Documentation to help developers porting Dasher to other platforms is now
available from here
Dasher 3.0.0 released
The final version of Dasher 3.0.0 has been released. Get it now from
the download page
New project manager
Thanks to funding from the Gatsby foundation,
the Dasher project now has a new software development manager
and researcher, Matthew Garrett
Matthew will coordinate contributions to the source code
and feedback from users. Please see the development page
for the recommended feedback methods.
Version 3 is now released for
Windows and Linux. You can
download it from the Dasher download page.
Windows versions for
(windows NT, windows 2000, windows XP) and (windows 95-98) are
Version 3 is a complete rewrite of Dasher. It should
have all the key features of version 1.6.8, and is intended
to be far more development-friendly.
One of its new features, which we expect many users will
appreciate, is the "automatic copy" option, which
has the effect of copying the written text into
the cut'n'paste buffer whenever dasher is stopped. (Enable this option using the menus.)
Version 3.0.0 prerelease 2 supports several English alphabets.
Support for other languages will follow soon. Portuguese is the
first language in the queue.
Further information about Dasher version 3
A port to ipaq-running-linux is also being made by Hanna Wallach.
Version 3 was written by David Ward, Iain Murray, Phil Cowans,
and Matthew Garrett.
Feedback on version 3 should be sent via the
please, or else by email to dasher-at-mrao.cam.ac.uk.
cliffn has written a front end for dasher v1.6.8 in VB5 which allows to run
Dasher, allows one click to save the text into a file, and
allows the file to be read aloud. With a shortcut to the text file
on your desktop it is easy to edit and copy and paste to another app.
Tested only on Win 2000 but available for download with a right click
on the file name (StartDasherFS.exe) from:
this exe file should be put in the dasher folder alongside dasher.exe.
This text file gives Margaret Cotts's
using Macro Express to connect Dasher 1.6.8 to
etriloquist, and further information
submitted by other users.