DYNA Fall 2025: 29-30 September. More info

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