Bloomberg have been a regular sponsor of both events for many years and a big supporter of our community. So we're really pleased that they are continuing their support of our combined event at the platinum level!

Let's hear from them why they do it:

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Bloomberg is building the world's most trusted information network for financial professionals. Our 9,000+ dedicated engineers are advancing and building new systems for the Bloomberg Terminal to solve complex, real-world problems.

C++ is one of our core programming languages. We constantly push the language to its limits because our code must be scalable, reliable, and extremely fast — especially since every microsecond counts in finance.

Our C++ experts build everything from low-level libraries and components to some of the world’s most performant financial applications, analytics, and trading systems. They also contribute to the C++ Standards Committee (WG21).

TechAtBloomberg.com/cplusplus

Ripple partnered with us a couple of years ago (at C++ on Sea), so we're pleased they have decided to come back as Gold sponsor.

To tell you more about who Ripple are and what they do, let's hear directly from them:

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Founded in 2012, Ripple is the leading provider of blockchain-based enterprise solutions across traditional and digital finance. Its solutions span global payments, custody, liquidity, and treasury management, serving as a one-stop shop for moving, storing, exchanging, and managing value. Ripple’s stablecoin, RLUSD, and the cryptocurrency XRP underpinning these solutions allow Ripple and its customers to shape the modern financial system.

We're thrilled to welcome a new sponsor this year, G-Research! We're glad to have their support of the C++ and wider developer community.

Here are some words from them:

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G-Research is a leading quantitative research and technology firm based in London. We bring scientific clarity to financial complexity - tackling some of the most challenging problems in quantitative finance. By combining deep research with advanced technology, we build smart strategies that win over time. We unite world-class researchers and engineers in an environment that values deep exploration and methodical execution. We find patterns in noisy, real-world datasets to predict movement in global financial markets - blending mathematical precision with state-of-the-art machine learning

We also partner with and contribute to the open-source community, building world-class tools that benefit our research and the wider world.

For more information, visit gresearch.com.

WorldQuant return to support our community, again, this year - as gold sponsor. Thanks to their support in making this event a success.

Here's a bit more about them, in their own words:

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WorldQuant is a quantitative, data & technically driven quantitative asset management firm — over 80% of our employees code on a daily basis. They use computer science, math, and other techniques to seek to produce high-quality predictive signals (alphas) focused on exploiting market inefficiencies. Technologists at WorldQuant research, design, code, test and deploy projects while working collaboratively with researchers and portfolio managers.

Thanks to Citadel Securities for supporting us, again. They have been with us for several previous C++ on Sea's, as well as the last ACCU Conference, and we're grateful for their ongoing support of the C++ and wider developer community.

Here are some words from them:

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Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s and our clients’ most critical challenges.

Together, we are forging the future of capital markets. For more information, visit CitadelSecurities.com.

We’re pleased to welcome Hudson River Trading (HRT) as a Gold Sponsor of ACCU on Sea 2026!

Here’s a few words from them:

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HRT is proud to be a Gold Sponsor of ACCU on Sea 2026. We are a quantitative trading firm that relies on C++ every day to solve complex, real-time challenges at the intersection of computer science and global markets, and we believe that fostering deep technical expertise in programming languages like C++ is essential to advancing the state of modern computing.

We look forward to watching our colleagues Robert Leahy and Matt Godbolt present on std::execution and microarchitecture implementation on June 17th and 20th, and we’re excited to connect with all of this year’s speakers and attendees at the HRT Gala Dinner on June 19th (tickets required).

To learn more about HRT, check out our booth at the conference or visit www.hudsonrivertrading.com.

About HRT

Hudson River Trading (HRT) is a leading quantitative trading firm at the forefront of technical innovation in global financial markets. Every day, we bring together the world’s sharpest minds to collaboratively solve challenging problems and build technology that will drive the future of trading. Leveraging one of the world’s most sophisticated computing environments for research and development, we trade across multiple asset classes and time horizons on more than 200 markets worldwide. We are a leading voice advocating for fair and transparent markets everywhere and dedicated to creating a better trading landscape for all.

Another long time sponsor of our conferences is Undo, and we're really pleased that they are back as Gold Sponsors, again!

Here's what they have to say:

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Undo is delighted to be a Gold Sponsor of ACCU on Sea in Folkestone.

We’re excited to support an event that champions technical excellence, innovation, and collaboration — and we’re looking forward to meeting attendees, hearing new perspectives, and contributing to the conversation.

Bringing together developers, engineers, and technology leaders from across the industry, ACCU on Sea is a fantastic opportunity to share ideas, explore the latest thinking in software development, and connect with the wider engineering community.

If you’re attending, come and say hello to the Undo team.

We're grateful to think-cell for once again sponsoring our event. They have previously sponsored every edition of C++ on Sea since the start and we're glad to welcome them back, in our new format!

Who are think-cell, and why are they so interested in our community? Let's hear from them.

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think-cell has established its product as the world’s leading software for creating data-driven business presentations in Microsoft PowerPoint. Since our founding in 2002, we have helped more than 1.3 million users at over 35,000 companies build their presentations faster and more efficiently. Our mission is to streamline every aspect of presentation creation, providing the tools users need to quickly and accurately create any slide, from agendas and process flows to complex data-driven charts.

Key elements of ensuring productivity are our intuitive user interface, our unique layout algorithm, and our software’s seamless integration with Microsoft Office. We work on challenging visualization problems, we reverse-engineer Microsoft’s code, and we reinvent how slides are created. As think-cell is the only German company funding the C++ ISO committee delegation, the components we invent here have a good chance of being incorporated into the standard. Learn more about how we use C++ in our talks and publications.

As always, we received many times more submissions than we could accommodate, and we're deeply grateful to our reviewers for helping us navigate it. In fact, this year has seen a record number of submissions - even when accounting for the merging of two conferences! So, if your talk wasn't selected this year: thank you for submitting, and please don't be discouraged.

The Main Conference

The main conference runs from Wednesday 17th to Saturday 20th June. Yes, Saturday — a first for this venue! Four days, five tracks, and a lineup that spans the full breadth of what ACCU on Sea is about: deep C++ content, broader software craft, and the kind of talks that make you rethink something you thought you understood.

You'll see sessions on C++23 and C++26, reflection, contracts and safety, async patterns, memory layout, performance, programming languages, design patterns, code quality, and plenty more besides.

We previously announced our keynote speakers. Unfortunately, since then, we've had to make a change. Hopefully Sophia Turner will be able to join us next year, but for this year we'll announce a new fourth keynote, shortly.

Still with us are: Andrei Alexandrescu, Yvonne Rogers, and Walter Brown.

Workshops

Pre-conference workshops run on Monday 15th and Tuesday 16th June, and we have a strong lineup this year from some of the community's most respected instructors.

Running across both days:

• C++ Best Practices — Jason Turner
• C++ Templates for Developers — Walter E. Brown
• Speaker Training Workshop — Sherry Sontag

Monday only:

• C++ Software Design — Klaus Iglberger
• Unsafe Rust Demystified — Florian Gilcher

Tuesday only:

• C++23 in Practice: A Complete Introduction — Nicolai Josuttis
• Secure Coding in C and C++ — Robert C. Seacord

Full details on each workshop are on the workshops page. Workshop tickets are available separately — see the tickets page to book.

Evening events

This year we have the most packed evening schedule of either original event! We have something going on every evening from Tuesday (before the main conference) to Friday, inclusive. Let's take a tour...

🍸 Pre-registration evening

To enjoy the full conference, it's best to arrive the evening before the first day (unless you're in one of our workshops, in which case you'll already be there). So our registration desk will be open on Tuesday evening for you to collect your badge and goodies bag. But we'll also have the bar open, so why not stick around for some socialising, too?

⚡ Lightning Talks

Lightning talks return on all three evenings of the main conference (Wednesday, Thursday and Friday). Each talk is up to five minutes — fast-paced, diverse, and a lot of fun. Submission details will be shared closer to the event. Anyone can propose one!

🍸 Mosaic FM Welcome reception

Another tradition we're bringing over from the ACCU conference is the welcome reception, which will be held after the lightning talks on Wednesday evening. This is sponsored by Mosaic Financial Markets, who will be covering food and a drink.

🍿 Movie Night (+ think-cell pizza)

Walter Brown will, again, host his Movie Night, on Thursday evening. This was very popular at C++ on Sea in 2024, so we're excited to see it again. This runs from 19:00 to past 21:00. So think-cell will be covering pizza for everyone, and the bar will be open.

🍽️ Conference Dinner

On Friday evening we'll be hosting the ACCU on Sea Conference Dinner, a gala dinner in the Channel Suite overlooking the sea. Speakers are our guests of honour. A separate ticket is required — head to the tickets page to book yours.

👕 Hoodies!

This year, for the first time, we're offering ACCU on Sea hoodies as an add-on with your ticket (And yes, they're the kind of hoodie you'll actually want to wear.) Of course we're still offering t-shirts, too.

Get Your Tickets

If you haven't already grabbed a ticket, now is the time, and if you're not already an ACCU member it's worth noting that a digital membership is just £50 — and the discount it unlocks on your conference ticket more than covers the cost.

We can't wait to see you in Folkestone in June. 🌊

We are delighted to announce our full line-up or keynote speakers to set the tone for our 2026 conference.

Sophia Turner

Sophia has been involved in language design for over 20 years and was instrumental in the creation of TypeScript and the evolution of Rust. More recently she created Nushell and June. She's worked at Microsoft, Apple, Mozilla and Cray. So she knows a thing or two about language design, evolution, success and failure.

Andrei Alexandrescu

Andrei shot to fame in the C++ world with his book, Modern C++ Design. the "Modern C++", then, was C++98 - but his ideas were way ahead of their time and set the blueprint for C++ for the next decade and beyond. But he didn't stop there. He has introduced or championed concepts that have made it into C++17, 20, 23 and beyond - even though for much of that time he was working on the D Programming Language. Now fully focused back on C++ we look forward to what he has for us next.

Yvonne Rogers

Yvonne is, or has been, a Professor of Interaction Design, CTO of LetsThink.com, chair of excellence at Bremen University, member of the US National Academy of Engineering and Fellow of the Royal Society, ACM, BCS and the ACM's CHI Academy.

She has won many distinguished awards for her contributions to the fields of maths, science, AI and computer science.

Walter Brown

Walter is an institution! With over 60 years of experience in industry, academia, consulting and research, Walter has seen it all - and has a particular way of sharing his deep experience with us that makes the complex seem simple, while also making you realise you never fully understood what you thought you understood to begin with.

The joint identity, at least, deserves its own website, so here it is, and this is the first post. For historical news the feeds on the individual sites remain, of course (accuconference.org and cpponsea.uk. But most people will never read this post, anyway. It's just here to provide a logical starting point, or to satisfy the particularly curious.

Let the conference news begin!