Fabio Niephaus

Meet @pyronautfw.bsky.social! 🐍🚀 @thomaswue.dev and @graemerocher.bsky.social live at @devoxx.com, showing Pyronaut in action: Python and Java coming together through @micronautfw.bsky.social, GraalPy, and @graalvm.org – with fast startup, low memory footprint, and a tight developer feedback loop.🔥

Curious about what's new in @graalvm.org? Meet @thomaswue.dev, @alina-yurenko.bsky.social, @graemerocher.bsky.social, and me at @devoxx.com this week!

Curious what’s new in @graalvm.org? Meet me at: 🇧🇪 @devoxx.com BE · Oct 5–9 🇨🇭 @jugch.bsky.social, Zurich · Oct 20 🇨🇭 GraalVM Community Summit · Oct 21–22 🇲🇦 #DevoxxMA · Nov 4–5 I’ll share the latest – from Native Image, Python, and WebAssembly to Oracle Database. Where will I see you? 👋

GraalVM 🤝 WebAssembly Join me at @bedcon.bsky.social in Berlin this Wednesday (Sep 23), where I’ll talk about all the cool #WebAssembly things you can do with @graalvm.org. ➡️ bed-con.org/2026/

Come and join @alina-yurenko.bsky.social and me for another @graalvm.org release party! 🎉 We've got a lot of updates and new features to talk about. Details below👇 - see you there!

Big @graalvm.org news: - Monthly releases start this month 🚀 - New commercial support options now available 🤝

GraalVM CE can now sandbox untrusted JavaScript and WebAssembly code! 🚀 As AI generates more and more of the code we run, the ability to execute it safely matters more than ever. We have more coming that builds on this, so stay tuned! github.com/oracle/graal...

GraalWasm just got faster! 🔥 The new threaded interpreter delivers significantly better interpreter performance. In interpreter benchmarks, total execution time is reduced by 5-40%! Details: github.com/oracle/graal...

Excited to speak at #WasmCon Europe next Monday about bringing #WebAssembly to the JVM ecosystem with @graalvm.org. I’ll demo GraalWasm in a Spring Boot app and show how GraalVM can compile JVM apps to Wasm for browser, mobile, and cloud. Join us! Details: sched.co/2DY2u

Good morning #JFokus!👋 Make sure to catch @ssmith.bsky.social and @fniephaus.com to ask anything you want to know about GraalVM & WebAssembly, and attend their session on Wednesday!

GraalVM 25.0.2 is now available! 🚀 Upgrade to get the latest security updates and improvements. Release notes: www.graalvm.org/release-notes/ Downloads: www.graalvm.org/downloads/

WasmGC is coming to GraalWasm, unlocking the power of JVM garbage collectors for #WebAssembly! This will also get GraalWasm a lot closer to implementing the full Wasm 3.0 spec. Join @ssmith.bsky.social and me at @jfokus.se next month to learn more: www.jfokus.se/talks.html?s...

I'm really looking forward to @jfokus.se which is coming up soon! It's always a great conference and you might still be able to find tickets so you can join @fniephaus.com and me as we sail our longship to the mysterious lands of #WebAssembly and @graalvm.org.

Native Image is an *amazing* technology! Having a 150mb+ JAR full of weird compiler stuff (from jrtfs to Swing!) in kotlinc quite easily built with Native Image, and immediately yielding this kind of improvement is outstanding. Looking forward to what's next 👀

The @kotlinlang.org team at @jetbrains.com is working on a @graalvm.org-compiled kotlinc. Early experiments look very promising: > So far, a native image with PGO offers a properly "warmed-up" kotlinc and with up to 20% more peak throughput. Ticket: youtrack.jetbrains.com/issue/KT-823...

Excited about @quarkus.io latest update, including first-class support for JavaScript, Python, and Wasm – powered by @graalvm.org! 🚀

Nice demo from @fniephaus.com from the @graalvm.org team of a Spring Boot application summarizing various files with MarkItDown and Hugging Face Transformers popular Python libraries with GraalPy. github.com/fniephaus/gr...

It’s live! "@graalvm.org meets #WebAssembly” from @devoxx.com: compile JVM apps to Wasm (Web Image) and run Wasm in Java or Kotlin at near‑native speed (GraalWasm). Lots of live demos included! www.youtube.com/watch?v=uefc...

Spring Shell running on the browser thanks to WebAssembly, cool demos by @fniephaus.com Repo: github.com/graalvm/graa... #DevoxxBE

Excited to talk about @graalvm.org and #WebAssembly tomorrow at @devoxx.com! 🚀 Join me to explore Web Image and GraalWasm — and see them in action with plenty of live demos.

Big update for GraalVM's AOT compilation in the making! 🔥

The new @graalvm.org 25 release is now available in the @intellijidea.com JDK downloader!🎉 Grab it while it's!🔥 www.jetbrains.com/guide/java/t...

Fabio @fniephaus.com will introduce Web Image, a new preview feature of GraalVM that enables compiling applications into efficient Wasm modules, including use cases and live demos. We'll also look at GraalWasm, a new embeddable Wasm runtime. m.devoxx.com/events/dvbe2...

GraalVM 25 released today! 🎉 My favorites this release👇

TruffleRuby 25.0 is released! 🚀🎉 It can now run native extensions in parallel, just like Ruby code already ran in parallel in Threads on TruffleRuby! It also features many compatibility improvements and notably support for custom Digest algorithms. github.com/oracle/truff...

#GraalVM 25 is out! 🚀 Exciting updates for #GraalPy, #GraalJS, and #GraalWasm — plus our first preview of #WebAssembly compilation!

Excited to be back at @Devoxx Belgium—this year talking about @graalvm.org and #WebAssembly! Don’t miss what’s next for Java & Wasm. 🙂 m.devoxx.com/events/dvbe2...

Want to build, debug, and monitor native apps with GraalVM – all inside IntelliJ IDEA? Watch @fniephaus.com's session from #IntelliJIDEAConf 👉 youtu.be/YqrEqXB59rA

openHAB, the open source home automation software, has integrated GraalPy!🤖🐍 "Unlike the Jython Scripting add-on, it offers full Python 3.11 support and is future-proof. It can be used as a scripting language in UI, file-based rules, and transformation services" www.openhab.org/blog/2025-07...

Had a fun chat with @adambien.blog about @graalvm.org and #WebAssembly. Give it a listen! 🙂

@fniephaus.com’ session, “Tips and Tricks for GraalVM and Graal Languages in IntelliJ IDEA”, is now live! Discover how to go native, embed JS/Python/Wasm, and debug it all in IntelliJ IDEA. Watch now: youtu.be/YqrEqXB59rA #IntelliJIDEAConf

🎉 Greetings from #IntelliJIDEAConf 2025! We’re just hours away from kicking off Day 1. Today’s sessions: ☕ 30 Years of Java with @sharatchander.bsky.social 🧪 Kotlin notebooks, GraalVM, AI apps & more 📺 Join us at 9:00 am UTC: youtube.com/live/Bd8EA8X...

If you are based in Prague, this is a great opportunity to learn about #GraalPy and @graalvm.org, first hand from Štěpán who's working on both!

Looking for tips & tricks for @graalvm.org and Graal Languages in @intellijidea.com? Join me at IntelliJ IDEA Conf '25 to learn how to use it to: 🌱 Compile, monitor, and debug native images 🐍 Embed Python, WebAssembly, and more in your Java apps 👉 Agenda at lp.jetbrains.com/intellij-ide...

On my way to Cologne for @jcon.one. If you want to talk about @graalvm.org, GraalPy, or GraalWasm, or just say hi, feel free to drop by the Oracle booth! 🙂

And it will be "serverless" #webassembly: you won't have to use JavaScript (unless you want to), you can use the #java you know and love with #graalvm: www.youtube.com/watch?v=Z2SW...

Introducing our #IntelliJIDEAConf speakers and talks! 🎙 Tips and Tricks for GraalVM and Graal Languages in IntelliJ IDEA, by Fabio Niephaus 🗓 June 3, 11:00 am UTC Get the full details and register today! 👉 jb.gg/pgpngl

Want to learn more about the new #WebAssembly backend for @graalvm.org and what you can do with #GraalWasm? 🤓 Our #WasmIO25 talk is now on YouTube. Slides are available, too.

Did you know that #GraalPy is nicely integrated into @jbang.dev? 🐍☕️ ✅ Use Python packages in #Java ✅ Support for Python 3 ✅ Smooth interoperability via Java interfaces Full demo at: github.com/graalvm/graa...

Great to see @graalvm.org languages in action! If you're a #Java developer that needs to embed some #Python, #JavaScript, or #WebAssembly, checkout: GraalPy www.graalvm.org/python , GraalJS www.graalvm.org/javascript , GraalWasm www.graalvm.org/webassembly #wasm

Our "javac on #WebAssembly" demo (and code!) for #WasmIO25 is up on GitHub in case you want to play with the new Wasm backend for @graalvm.org! 🚀 More details to follow soon! graalvm.github.io/graalvm-demo...

"Hello from #WebAssembly generated with @graalvm.org!" 👀 (And yes, we can run more than a HelloWorld program 🤓) More at #WasmIO25 tomorrow: 2025.wasm.io/sessions/the...

We're going live in only a few minutes!

Join us at #WasmIO25 next Friday 28th March and learn more about the new #WebAssembly backend for @graalvm.org! 🚀 2025.wasm.io/sessions/the...

Join @alina-yurenko.bsky.social and me for the @graalvm.org release stream next week! We'll cover all the cool new features and improvements in GraalVM, #GraalPy, #GraalJS, and other Graal technologies!

GraalJS now supports Wasm module imports which leverage GraalWasm. Embedding the excellent Photon Rust library in JavaScript is now even simpler:

GraalPy, our Python runtime comes with lots of performance improvements, revamped native interop and a Gradle plugin for simple Python package embedding. Using a Python package from Java with Gradle is now as simple as this:

The next release of #GraalPy, #GraalJS, #GraalWasm, and other Graal Languages is out! More details in the blog post below 👇