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Logo for Dyalog Open Source Software Projects, featuring a smooth white egg above the word “Dyalog” in a modern geometric font, with the tagline “open source software projects” below, all set against an orange gradient background.

Dyalog Open Source Projects

To grow the APL community, we need to make it easier for people outside the current community to become involved. Over the last few years we have been… Read
Geoff Streeter holding an award trophy, dressed in a dark suit and patterned tie, smiling at the camera in a warmly lit room.

11 April 2023 – A Day to Celebrate!

Today we reach two very significant milestones. 40 Years of Dyalog APL On this day, we have cause for celebration: it is 40 years since the release of Dyalog… Read
Geoff Streeter holding an award trophy, dressed in a dark suit and patterned tie, smiling at the camera in a warmly lit room.

Not All Heroes Wear Capes

On Friday 15 October, the SERV S&L was presented with The Queen’s Award for Voluntary Service by the Lord Lieutenant of Surrey. Geoff Streeter was… Read

Essays on APL Since 1978

In June, Mikhail Barash and Anya Helene Bagge published a collection of essays written by the students of the seminar course INF328B on History of Programming… Read

Thank You Ian Sharp

On July 16th, one of the most influential founders of what we today refer to as the “array language community” died peacefully, a few months after… Read

The APL Orchard

If you have not already been there, I highly recommend visiting the APL Orchard (apl.chat). Adám Brudzewsky originally started this chat room on Stack… Read
Morten Kromberg seated at a desk with two monitors, preparing a recording with lighting equipment set up, during a Dyalog event.

Dyalog ’20 – Recordings Now Available

We are happy to announce that the full set of recordings from Dyalog ’20 online is now available. So if you missed the all or any of the talks, or would… Read

Warming up to Dyalog ’20 Online with the last Recording from Dyalog ’19!

Three weeks from today, Gitte Christensen and I will be opening the 2020 Dyalog user meeting. Like so many similar gatherings, we are moving online; this… Read
Five people seated in a row on stage for the Young APLers' Panel, including Stephen Taylor, Alve Björk, Yuliia Serhiienko, James Heslip, and Josh David, engaged in a discussion with microphones.

Dyalog ’19 Videos: Week 10

The release of the final set of videos from the Dyalog ’19 user meeting in Elsinore slipped into 2020, thus providing me with a perfect opportunity to… Read
Roberto and three students from Liceo Scientifico GB Grassi Saronno present at Dyalog ’19. One student speaks into a microphone while using a tablet, with the others standing attentively nearby. All are wearing MathsBeyond shirts.

Dyalog ’19 Videos: Week 9

Depending on which day you decide to watch this recording, you may get a different answer from the one that Richard did as he answered his own question… Read
Andy Shiers, wearing a Dyalog-branded polo shirt and a headset microphone, stands mid-speech during his informal “fireside chat” session at Dyalog ’19. He has grey hair and is holding a small object in his hands, with the wooden panel backdrop of the Konventum venue behind him.

Dyalog ’19 Videos: Week 8

When Aaron Hsu was at Dyalog ’19 in Elsinore, he was preparing the defence of his PhD Thesis on A Data Parallel Compiler Hosted on the GPU. In his talk… Read
Rich Park presenting at Dyalog ’19. He stands beside a wooden podium, gesturing with one hand while wearing a headset microphone and a dark green T-shirt, in a wood-panelled lecture hall at Konventum.

Dyalog ’19 Videos: Week 7

Week 7 features talks by two recent additions to the Dyalog team. Richard Park joined Dyalog a year ago, and his primary focus is the production of new… Read
Claus Madsen of FinE Analytics speaks at Dyalog ’19. He stands beside a podium, wearing a black t-shirt and headset mic, with hands clasped as he addresses the audience in a wood-panelled lecture hall at Konventum.

Dyalog ’19 Videos: Week 6

Scrinium is a portfolio management system that can handle a comprehensive range of financial assets, collect them into “portfolios”, and compute… Read
Marshall Lochbaum

Dyalog ’19 Videos: Week 5

In week 5 of the Dyalog ’19 videos, Francesco Garue tells how, after APL Italiana was acquired by SimCorp and became SimCorp Italiana, the two development… Read

Dyalog ’19 Videos: Week 4

Welcome to week 4 of the Dyalog ’19 recordings! This week, Tommy Johannesen of Jersie Data tells us about an interesting application that he has written… Read

Dyalog ’19 Videos: Week 3

In the third week of Dyalog ’19 recordings, Stig Nielsen from SimCorp A/S talks about recent work to turn a very large body of APL code, originally… Read

Dyalog ’19 Videos: Week 2

Welcome to the second week of recordings from Dyalog ’19 in Elsinore! This week we are featuring three presentations about work that is either already… Read

Welcome to the Dyalog ’19 Videos!

It is still true that most APL users live north of the equator, which means that at this time of year the sun is below the horizon more than half the time.… Read
Low-angle close-up of vibrant blue scilla flowers blooming in early spring among green grass and soil, with a blurred background of trees and sky.

A Blustery Spring

Dyalog version 17.1 will be released soon, with the HTMLRenderer working under Windows, macOS and GNU/Linux, the “Link” system providing infrastructure for… Read
Jay Foad, wearing a light-coloured checked shirt, standing in front of a wooden beam structure, smiling softly at the camera

Goodbye from Jay Foad

At the end of May 2019 I am leaving Dyalog, so it seems like a good time to reflect on my time here and what I’ve learned from APL and the APL community.… Read

Pool Stories: Fergus back on Form

It has been almost 2 years since our last post about Jo Fergus (daughter of our Customer Account Manager, Karen Shaw) the pool player who Dyalog have sponsored… Read

Phil Goacher (05-11-40 – 09-03-18)

I attended Phil Goacher’s funeral yesterday. He probably had no idea of just how much he would influence the development of APL. I first met Phil at W S… Read

Supporting the Community – Update

You may have been wondering what has been happening with Jo Shaw (daughter of our Customer Account Manager, Karen) the England pool player who Dyalog have… Read
Morten Kromberg and Gitte Christensen receive the 2016 Iverson Award at a formal event. Gitte holds a plaque while Paul Grosvenor of Optima Systems Ltd speaks into a microphone.

2016 Iverson Award Recognises Dyalog’s CEO and CXO

The Kenneth E. Iverson Award for Outstanding Contribution to APL is bestowed at the discretion of the Special Interest Group on APL of… Read
MicroAPL

MicroAPL Announces End-of-Life for APLX

Unfortunately, our colleagues at MicroAPL have decided to withdraw from the APL market, essentially due to the end of life of components they are using to… Read
Dense tropical forest with a mix of tall trees, lush green foliage, and overlapping palm fronds under bright daylight.

Using Dyalog APL to study the geographical distribution of vegetation species in northern tropical Africa

At Dyalog we have been wondering for some time about a recurring spark of applications for educational licences from Africa. In this article we speak to… Read
A close-up side view of a sleek sailing yacht cutting through the water at speed, with sunlight reflecting off the waves and distant islands on the horizon.

Stormwind Wins Grand Prize in Apps4Finland Competition

In Southern Finland, boats are the main means of transport between the many small islands in the Archipelago. Navigating the area is an extremely complex task,… Read
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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).

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