zalim (kotlin wasm compiler webassembly VM)

Kotlin 2.4.20 is out! It includes... * New allEqual / allDistinct functions * Coroutine stack trace recovery * Swift Export with sealed classes and cross-lang inheritance * New Wasm compilation modes * ...and more! Learn all about it in our latest video: www.youtube.com/watch?v=UhRf...

I'm working on this. We're trying to build a developer preview of wasm components running in Firefox, along with getting good docs and toolchain support so that people can try it out easily. Should have more details later this year!

Kotlin Toolchain 0.12 was just released! It includes... 📚 KMP library publication (!) 🌐 Wasm app support 🖼️ Compose Preview support + more Android tooling 🔥 Better Compose Hot Reload 🍎 iOS improvements ... and much more! Learn about the rest here:

Kotlin Toolchain 0.12 adds multiplatform library publishing, builds Wasm JS apps for the web, and raises its minimum supported JDK to 17. alternativeto.net/news/2026/9...

Hey friends, it's been a while! It's time for another summer sale — starting today, you can get the book for 50% off. Just head on over to wasmgroundup.com, no discount code required. So, if you've been meaning to pick it up (or you know someone who has), what better time than now?

Interesting... DataBricks just bought the company behind this open-source project. PGlite - Postgres in WASM github.com/electric-sql...

Gecko: Intent to prototype and ship: WebAssembly Compact Import Section proposal

Compose Stability Analyzer plugin 0.12.0 has been released! Now, it supports wider targets for Kotlin Multiplatform: Android, JVM, iOS, macOS, Linux, Windows, and js/wasm. skydoves.github.io/compose-stab...

I usually include a destkop/JVM client in Compose Multiplatform projects I work on as I think faster to iterate on. Just realised that also very useful to have a Kotlin/Wasm based client as Claude is able to drive it faster using following plugin code.claude.com/docs/en/chrome

Just arrived in NY🗽 to participate in the #WebAssembly Community Group meeting hosted by Siemens in Princeton.

« The Wasm GC and exceptions proposals are both enabled by default in today’s Wasmtime 47 release! » 🎉 bytecodealliance.org/articles/was...

Hey, there is a new blog post about writing fast interpreters in Wasm: dbezhetskov.dev/the-art-of-w...

Andrea Peruffo explains in this new @foojay.io #podcast, what #WebAssembly #WASM is, and how it works. Did you know it's already used in a lot of #Java libraries? His #Endive project makes it easy to use WASM in Java projects. On YouTube or in your podcast app: www.youtube.com/watch?v=BCbJ...

github.com/WebAssembly/...

Finally

🚀 Kotlin 2.4.0 is here! ✅ UUID support in stdlib ✅ Java 26 support ✅ Kotlin/Wasm incremental compilation by default ✅ Analysis API improvements ✅ Streaming diagnostics API ✅ Performance & compiler enhancements 🔗 github.com/JetBrains/ko... #Kotlin #KMP #AndroidDev

🚀 Google I/O updates for Chrome built-in AI! 🎉 Prompt API ships to stable in Chrome 148! Previews on the horizon: 🛠️ Native Tool Calling preview 🔍 Embeddings API preview. Also a new 🎛️ Prompt Parameters Origin Trial. Join the Early Preview Program for heads up and feedback: goo.gle/chrome-ai-de...

Ok, Google! I probably need to update my slides for #KotlinConf’26 🤔 #WebAI #Kotlin #Wasm

I personally prefer web apps for many cases, including events. 👉 kotl.in/conf-web

Heading to Munich for @kotlinconf.com 🚀 See you soon! 🖖 #KotlinConf #KotlinConf26

Did you know that Binaryen's optimization techniques can significantly shrink binary sizes while boosting performance? With its robust support for multiple languages, it's a game-changer for developers aiming for efficiency in WebAssembly....

Help us build the WebAssembly language reference on MDN! 🤝 We're documenting Wasm 1.0 instructions, reference-types, and SIMD, and looking for technical writers and reviewers to join. Join the webassembly channel on our Discord or start here 👇 github.com/mdn/mdn/iss...

Want to help make Wasm more accessible? Come join us! ✨

Helping decision-makers say yes to Kotlin Multiplatform starts with understanding the business value behind it. This guest post from Touchlab explores how KMP can improve delivery speed, reduce risk, and support long-term product strategy. 👉 https://kotl.in/helping-decision-makers-say-yes-to-kmp

Kotlin + WebAssembly is becoming practical. Run a minimal HTTP server on WASI github.com/Kotlin/sampl... This sample uses `wasi:http` and early WebAssembly Component Model support – a step toward portable, composable backend services in Kotlin. What would you build with this? 💬

ICYMI: 🚀 The first alpha of Room 3.0 The build focuses on Kotlin Multiplatform and expands support to JavaScript and Wasm. It is Kotlin-first and built around coroutines, making it easier to share your data layer across platforms today: android-developers.googleblog.com/2026/03/room...

Beyond cool: the #ByteCodeAlliance #webassembly project #wasmtime is in space!! www.federation-openspacemakers.com/en/participa... is the fastest moving webassembly yet. :-) I hope to see the code soon!

🤩 My #wasmio26 talk is live: “Building web apps with Kotlin and WebAssembly” ▶️ www.youtube.com/watch?v=7Aml... #Kotlin #WebAssembly #Wasm #Tooling #Debug

Interested in getting involved in WebAssembly standards? The JS type reflection proposal needs a champion! Mentorship would be available. We'd love to see new folks in wasm standards. Current proposal is here: github.com/WebAssembly/...

Can't wait for @dblnz.dev to dig into debugging! #webassembly at @wasm.io

Live from @wasm.io, @lukewagner.name shares a Wasm Component Model 1.0 roadmap update. Highlights are: - Lazy and GC-friendly ABI - Native browser support - Ease implementation by toolchains and runtimes - Growing the ecosystem - Close the gap in terms of features #wasm #webassembly

#wasmio26 opening is great as usual 🔥 Kudos to @sergialmar.com! 🙌

#wasmio26 (let me fix you hashtag 😉)

#wasmio26 just began! Have fun! #Wasm #WebAssembly

Want a sneak peek at some of fun #Hyperlight stuff going on at Wasm I/O?

Tomorrow at 17:20 CET / 12:20 EDT / 9:20 PDT, I'll be livestreaming at twitch.tv/jlengstorf, teaching @jason.energy about WebAssembly!! I'll do my best to condense the best parts of our Wasm book (@wasmgroundup.com) into ~60 minutes. 😄

🔥🔥🔥

Most cool! That means we will run four languages in components and hyperlight at @wasm.io