wazm_news #Wasm #WebAssembly #WASI

Chicory 1.7.0 – WasmGC, Multi-Memory, and Threads Improvements | Chicory Chicory 1.7.0: WasmGC, Multi-Memory, and Threads Improvements

Chicory 1.7.0 🚀
chicory.dev/blog/chicory...

WasmGC + Multi-Memory + Threads: paving the way for WebAssembly support of more and more languages like Kotlin, Scala, Dart & friends, running fully sandboxed, in pure Java bytecode(again for some😅).

Go try it! 💥
#WebAssembly #Chicory

WASM I/O • 19-20 Mar • Barcelona 2026 Home • Wasm I/O 2026. A 2-day WebAssembly conference in Barcelona, Spain

Barcelona. 19-20th March. Two days of nothing but WebAssembly with the people actually building and using it.

Come for the WebAssembly talks. Stay for the tapas.

🎟️ Grab your ticket before prices go up: 2026.wasm.io

Glad to see #WasmEdge progress with supporting #Wasm 3.0 features.

Almost all features are supported and enabled(!) by default!

#WebAssembly

📣📣📣
The last chance to submit your great talk!

#wasmio26 CFP is closing Today at 23:59 UTC

A great little post about using #wasmtime with #cloudhypervisor and referencing #hyperlight. Love the approach! burakemir.ch/post/buildin...

🚨 CFP CLOSING SOON 🚨

Only 10 days left to get your submissions in!

👉 Don’t overthink it, submit now: 2026.wasm.io

Rikito Taniguchi: Bringing Scala to Server Side Wasm with WASI & Component Model [Scala Days 2025] WebAssembly (Wasm) is a binary instruction format originally designed for web browsers. In recent years, its security and speed have led to its adoption beyond the browser, such as in cloud edge computing. Scala.js 1.17.0 introduced support for compiling to Wasm with JavaScript embedding. Building

🤖 Running Scala on the server with WebAssembly is no longer just theory. This session explores WASI, the Component Model, and what’s possible today.
Check out "Bringing Scala to Server-Side Wasm with WASI & Component Model" from Rikito Taniguchi

I Replaced a Docker-based Microservice with WebAssembly and It's 100x+ Faster TL;DR We've all heard the quote from Docker's founder, Solomon Hykes, back in 2019: "If WASM+WASI...

I Replaced a Docker-based Microservice with WebAssembly and It's 100x+ Faster https://cstu.io/3fbb9c #tecnologia #robotics #india

A WASM virtual machine written in Go with 0 dependencies
github.com/ziggy42/epsi...
😍😍😍

Running Wasm on the JVM How to run Wasm in Java - how does Wasm interact with the JVM and what options are there for Java Wasm runtimes?

Running Wasm on the JVM
blog.arcjet.com/running-wasm...

Saturday morning news roundup about WASM

Join me at Kotlin AMA Tomorrow (11.12) at 15:00–19:00 CET to chat about #Kotlin and #WebAssembly! 💬

kotl.in/ama

#JetBrainsAMAWeek

Wrong: Debugging core wasm can be done using Dwarf with chrome dev tools or VSCode; it really isn't hard anymore at all.
@anfibiacreativa.bsky.social and I did this two years ago using @vscode.dev and their wasm/dwarf extensions.
www.youtube.com/watch?v=sofG...

Feature Status - WebAssembly WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the...

Binaryen, the WebAssembly optimizer toolchain project, is now listed on the wasm website's features page:

webassembly.org/features/

As mentioned there, it has support for all standardized features (and many in-progress ones)

GitHub - roastedroot/protobuf4j: Work in progress pure Java Protobuf tools Work in progress pure Java Protobuf tools. Contribute to roastedroot/protobuf4j development by creating an account on GitHub.

github.com/roastedroot/... - a pure #Java Protobuf library. It works by compiling protoc → WASM → JVM bytecode via Chicory, a fantastic WASM runtime for the #JVM.

Wasm I/O conference logo

Only 6 days left to benefit of @wasm.io (19-20 March 2026 - Barcelona) early bird cheap conference tickets. I just bought mine! wasm.io #wasm #webassembly

Two days¹ #WebAssembly Community Group (in-person) Meeting just started.

More info at github.com/WebAssembly/...

Also join Discord discord.gg/AXKa942k

1: Followed by #Wasm Research Day

🙌 Excited to share:

Kotlin/Wasm is now Beta and ready for real applications.

I won’t keep you any longer...
Try it now ➡️ kotl.in/wasm.

CG, WG, W3C, Lively—Wasm standardization with Thomas Lively - WasmAssembly

Thomas Steiner 🤝 Thomas Lively

Name a more iconic duo... we'll wait. The new W3C #WebAssembly co-chair joins the #WasmAssembly podcast to discuss his new role, the JS Interop proposal, & Shared-Everything Threads → youtu.be/MDGqVpcD4a4

😅😅😅

Indeed, the next in-person Wasm CG meeting will be hosted by Google in Munich on October 28-29, with research day to follow on the 30th.

Registration information and details here: github.com/WebAssembly/...

Wasm 3.0 Completed - WebAssembly WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the...

The WebAssembly 3.0 spec is complete!

webassembly.org/news/2025-09...

This includes major features like GC, 64-bit memories, exceptions, and tail calls.

Wasm 3.0 Completed - WebAssembly WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the...

“[Wasm 3.0] has much better support for compiling high-level programming languages. Enabled by this, we have seen various new languages popping up to target Wasm, such as Java, OCaml, Scala, Kotlin, Scheme, or Dart, all of which use the new GC feature.”
webassembly.org/news/2025-09...

Kotlin 2.2.20 Released | The Kotlin Blog The Kotlin 2.2.20 release is out! This version delivers important changes for web development and other improvements. Learn more!

📢 The Kotlin 2.2.20 release is out, bringing important changes for web development! Kotlin/Wasm is now Beta, with improved exception handling in JavaScript interop, npm dependency management, built-in browser debugging support, and a new shared source set for js and wasmJs targets.

🔗 kotl.in/2.2.20

What's new in Kotlin 2.2.20 | Kotlin

Kotlin/Wasm is now officially beta! kotlinlang.org/docs/whatsne...

The next step should be IMO to mature libraries like github.com/Kotlin/kotli... and github.com/JetBrains/co... to provide unmatched DevXP to build amazing applications and websites with @kotlinlang.org end-to-end.

[Save the Date] DuckDB Amsterdam Meetup #3, Wed, Sep 17, 2025, 6:00 PM | Meetup TBA

The 3rd @duckdb.org is nigh!

- wed, sept 17, from 17:30
- Adyen Office, Rokin 49, Amsterdam, NL
- Free! RVSP: www.meetup.com/duckdb/event...

It's an honour for me to be an invited speaker! I'll be talking about:

"Huey: pivoting hundreds of millions of rows in the browser with DuckDB-Wasm"

Swift for Wasm: Q3 2025 Updates Since official support for Wasm in Swift 6.2 was announced at WWDC this year, Swift contributors have done a huge amount of work. To provide better visibility and to track progress, here’s a list of n...

Announcement of #WebAssembly support in Swift 6.2 at #WWDC 2025 was only a small step in our journey. Just in the last few months numerous improvements landed in the toolchain and libraries that I attempted to summarize here: forums.swift.org/t/swift-for-...

Announcing Scala.js 1.20.1 Harness the Scala and JavaScript ecosystems to develop robust apps for browsers, serverless, and Node.js.

#Scala.js 1.20.1 is released! It features a number of performance improvements, both for the JavaScript and WebAssembly backends. www.scala-js.org/news/2025/09...

Promotional banner for a WebAssembly course. The headline reads "Invest in your career. One plan, one price.". The course is discounted from $99 to $79 for full access. Benefits include all lessons with a final exercise, lifetime access, and a one-time payment. A "Buy now" button is shown at the bottom.

Since I am getting a lot of PPP requests I decided to make my #WebAssembly course more affordable for a limited time.

Grab it while it's available.

Link in 🧵

Franz Kafka looking surprised at the Wasm logo

New Blog Post: Extending Kafka the Hard Way (in which we inject #Wasm inside a Kafka broker using #Chicory, @extism and some elbow grease)

blog.evacchi.dev/posts/2025/0...

Implementation strategy for the Exception Handling proposal · Issue #3427 · bytecodealliance/wasmtime I've been interested in having the Exception Handling proposal supported in Wasmtime, so I looked into possible ways to implement it. There's been some prior discussion in issues #2049 and #1677, b...

Exception handling support has just been merged in Wasmtime. Great news for @kotlinlang.org and @graalvm.org compiling to #Wasm for server-side (and fullstack) use cases! github.com/bytecodealli...