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Dyalog '26 starts on 12 Oct - Visit the event website

More thinking. Less code.

Approach problems like never before

Dyalog APL is an array-oriented programming language that lets you express complex ideas in remarkably little code.
We build it, support it, and have done for over 40 years.

Dyalog APL is an array-oriented programming language that lets you express complex ideas in remarkably little code.
We build it, support it, and have done for over 40 years.

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Download Dyalog v20.0
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Full commercial support · Source code escrow · Windows · Linux · macOS · Raspberry Pi

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Try Dyalog free for educational and non-commercial use, get started or view the docs. 

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What's happening right now
Upcoming Events | Latest News
Winners of the APL Forge 2026 Announced
Meet the two winners of the 2026 APL Forge and the projects that earned them top honours.
Meet the Winners
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in Competitions
Registration open for Dyalog '26
Join us in Eastbourne, UK, from 12–16 October to exchange ideas, learn, and meet the Dyalog team.
Register Today
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in Events
Asher, welcome to Dyalog
Meet Asher Harvey-Smith, a Dyalog developer working on the interpreter, performance, and correctness.
Read the Interview
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in Team Dyalog
Take the APL Challenge
Join the APL Challenge and transform ideas into code. Not a programmer? No problem! We’ll guide you.
Start the Challenge
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in Competitions
Dyalog v21.0 is now available
Dyalog version 21.0 is now available for Windows, IBM AIX, Linux, Raspberry Pi, and macOS.
Download v21.0
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in Announcements

Trusted for over 40 years

Dyalog is used by organisations worldwide to build and run important business systems.

InvestCloud
Volvo Cars
SimCorp
ERGO
CGM
METSIM
Dyalog APL is cost efficient. Dyalog have kept the language modern, and feature rich. It integrates with modern technology.

Niels Hallenberg, SimCorp

Dyalog APL is cost efficient. Dyalog have kept the language modern, and feature rich. It integrates with modern technology.

Niels Hallenberg, SimCorp

Dyalog Ltd

Dyalog APL is an array-oriented programming language that lets you express complex ideas in remarkably little code. We build it, support it, and have done for over 40 years.

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Dyalog Ltd. Minchens Court, Minchens Lane, Bramley, Hampshire RG26 5BH U.K. Company Number: 05322189 (registered in England and Wales). VAT Number: GB812257648

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Technical advice and assistance on all aspects of Dyalog usage is available by e-mail (support@dyalog.com) and/or telephone (+44 1256 830030 – limited to U.K. office hours). Limited advice on design and coding is available, but is not intended to replace the use of the printed and on-line documentation. Except when reporting an issue with the software, users are encouraged to seek advice from the user community via the Dyalog Forum (reading the content of the forums does not require membership).