This page remains available mainly as an historical document

Most or all of the features are no longer available via the CDS/DL website since provision of the EPSRC UK national Chemical Database Service has been taken over by the Royal Society of Chemistry from 1st January 2013.

Some related features may be available via the RSC/CSD portal. For details of what is currently available on the CDS/DL website and also links to the RSC/CDS portal follow the link to the CDS/DL Homepage.

The information below was produced before January 2013 and may be incorrect at the present time.

X-Windows Software

Below is a summary list of X-Windows software available. For more detail, click on the product name.

Company Product Mac/Windows Price[1]
ASTEC Inc. ASTEC-X Windows XP/2000/NT/Me/98/95 $350
Attachmate KEA!X Windows 95/98/2000/NT [2]
Cygwin/X Cygwin/X Windows 95/98/NT4/2000/ME/XP Freeware
Frontier Technologies       SuperX Windows 95/98/2000/Me/XP/NT $214
HOB       HOBLink X11 Windows 95/98/2000/Me/XP/NT 219Euro
Hummingbird eXceed Windows 95/98/2000/Me/XP/NT [3]
Labtam Finland Ltd WinaXe (formally X-WinPro)       Windows 9x/ME/NT4/2000/XP $100
MicroImages Inc. MI/X 2.0 PowerMacs (MacOS 9.x), Windows $0 - $25
NCD PC-Xware Windows 3.1/95/NT [2]
NetManage ViewNow Windows 95/98/ME/NT/2000/XP $249
NetSarang Xmanager Windows 95/98/ME/NT/2000/XP $69 [1]
Pexus Systems X-Deep/32 Windows NT/2000/9X/ME/XP $59.95
Powerlan-USA eXodus Mac OS X, "Jaguar" and "Classic" Mac OS $295
Powerlan-USA WebTerm X Windows 95/98/NT4.0/2000/ME/XP $295
Starnet X-Win32 Windows 3.x/9x/NT/2000/XP $200
Tenon XTen PowerMacs $175      
Tenon XTools Mac OS X $99      
WRQ Inc Reflection X Windows 95/98/NT4/2000/ME/XP $360
XLink Omni-X Windows ME/2000/NT/95/98/XP $135

[1] Prices are for a non-discounted single-user license.
[2] Company does not list product prices on their web page.
[3] CHEST agreement available. Educational Site Licence

Hummingbird's (Vista) eXceed

For Windows 95/98/2000/Me/XP/NT Operating Systems.

Site licenses available from CHEST - so you site may already have paid for you to use it!
See for more details.
Many sites are already subscribed to this deal. Price is 825 pa for one operating system (e.g. WindowsNT), two o/s 1,300 pa, three o/s 1,700 pa.

Details of how to set up an XSTART session to log directly on to CDS can be found in our FAQ database.


For Windows 3.x/9x/NT/2000/XP Operating Systems.

Contains SSH and includes OpenGL support. A 1 month license key can be obtained from Starnet which will enable you to evaluate X-Win32 in fully-licensed mode. After 30 days, the program will revert to a 2-hour demo mode. 16 bit Windows 3.1 and MS-DOS versions are also available. Full versions cost $249, though academic discounts are available.

WinaXe (formally X-WinPro)

For Windows 9x/ME/NT4/2000/XP .

A free evaluation version is available from Labtam Finland Ltd. - operational 30 minutes per run. After 30 minutes session you need to restart WinaXe. No reinstallation needed.


For Windows ME/2000/NT/95/98/XP Operating Systems.

$135 for US customers, academic discounts available. A 15 day fully-functional evaluation version is available from XLink Technologies.


For Windows 95/98/ME/NT/2000/XP Operating Systems.

A free 45 day trial is available from NetManage .


For Win95, Win98, Win2K, WinNT, Win ME and Win XP Operating Systems.

A 30 day trial is available from Frontier Technologies .


For Windows 95, 98, 2000 and NT Operating Systems.

An evaluation copy is available for download from Attachmate


For Windows Operating Systems.

Now available as freeware from Pexus Systems.


For Windows 95/98/NT4/2000/ME/XP Operating Systems.

WebTerm X provides access to X Windows and X applications from within Web browsers or as a powerful stand-alone X server. An evaluation copy can be downloaded from Powerlan
Copies can be purchased for $295 (or Institute site licence for $2,500)


For Windows XP/2000/NT/Me/98/95 Operating Systems.

An evaluation copy is available from ASTEC . The software is available for 39,000 yen (approximately US$ $350 ) per 1 license


For Windows 95/98/NT4/2000/ME/XP Operating Systems.

Reflection OpenSSH Client, Reflection Kerberos Client, and XDM-AUTHORIZATION-1 for secure remote access to X Window applications. Free, fully functional, 60-day evaluation copy of Reflection X available from WRQ.


For Windows 3.1, 95 and NT Operating Systems.

30-day evaluation copy of NCD PC-Xware available from NCD


For Windows 95/98/ME/NT/2000/XP Operating Systems.

SSH(Secure Shell v1 & v2) protocol support on Xstart. Prices vary depending on licence type (Standard, Educational [30%off], Student or Campus License). A 30 day demo version is available for download at

HOBLink X11

HOBLink X11 is an integrated PC X Server package available for all 32-bit Windows platforms
An evaluation copy can be downloaded from HOB


For Windows 95/98/NT4/2000/ME/XP Operating Systems.

Cygwin/X is a port of XFree86 to the Microsoft Windows family of operating systems and is available free of charge (licensed under an Open Source compliant license).
Cygwin/X consists of an X Server, X libraries, and nearly all of the standard X clients, such as xterm and xhost. A copy can be downloaded from where a user guide is also available (make sure you select the 'xorg-x11-base' package from the 'X11' category).


For 68k Macs, PowerMacs, and Windows Operating Systems.

The Windows version (MI/X 3.0) is available for a 15 day trial period and can be downloaded over the web from Microimages.
The Mac version is free and can be downloaded from Microimages, or other sources such as at the Mac OS Archives


For any Power Macintosh or Power Macintosh clone.

Compatible with all modern versions of the Macintosh Operating System 7.5 to 9.0.4. 16 MB of RAM are recommended.

Educationa Site Licence available via CHEST for 1,250 or individual licence for 110. A demo version is available for download at


For Mac OS X.

Prices vary depending on sidegrade from another X-Windows package or government/educational discount. A 14 day demo version is available for download at


For 68k Macs and PowerMacs.

Now with integrated SSH security and Hardware Accelerated OpenGL. EXodus is now available from Powerlan-USA. An evaluation copy can be requested from Powerlan
The CHEST deal has expired but copies can be purchased for $295 (or Institute site licence for $2,500)

MacX For 68k Macs and PowerMacs was the old offering from Apple. This does appear to be available anymore (but you might find a copy to download somewhere)!