Dyalog is an advanced implementation of the APL programming language from Dyalog Ltd.

Since its introduction in 1983, Dyalog has developed a host of powerful language features and an unparalleled ability to interface to other Windows software, making it the most powerful APL-based application development system available in the market.


Dyalog for Windows Version supports the following versions of Microsoft Windows:

Windows 2000
Windows XP
Windows Vista
Windows Mobile

For more on Vista compatibility, see here

Dyalog APL is also available for:

Arrow UNIX


For Developer Licences please see here.

For Server Run Time Licences pricing please see here.

For terms and conditions please see here.

For terms and conditions regarding obtaining a personal, non-commercial licence or an educational licence please see here.

If you would like to apply for a personal, non-commercial licence or an educational licence please go to Download Zone.


All licences for Dyalog for Windows including developer licences, run-time licences, and server licences are supplied from distributors around the globe. Find your nearest distributor here.

You can also fax your requirements to Dyalog Limited on +44 (0)1256 830 031.

If you have any queries, please email or call +44 (0)1256 830 030.

UK Residents and Registered Companies: For delivery inside the UK, VAT will be charged at the prevalent rate.

EU Residents and Registered Companies: Please include your VAT Reference Number if applicable. Otherwise VAT will be charged at the prevalent UK rate.

Other geographical regions: Please contact a Dyalog Distributor. Find your nearest distributor here


Payment may be made by international bank transfer, credit card or sterling cheque. Credit terms are available for corporate customers.

Printed Manuals

Online on demand ordering of printed manuals is available onLulu

Printed manuals can be shipped anywhere in the world and quotes are provided instantly online in US$, £ or €. The manuals are also available as free of charge PDF downloads.

Product Manuals - Recent Versions overview

Version 12-13.0
Order manuals through LULU

For online ordering of Version 13.0 printed manuals and download of free-of-charge manuals in pdf format visit Lulu.

For a full overview with product order numbers, please click here or visit Lulu for a browse or to order.



Version 13.1 Documentation

Version 13 Help