In this episode of WebAssembly Unleashed, hosts Joel Moses and Oscar Spencer kick things off with updates on the upcoming Wasm.IO conference in Barcelona and the latest buzz around WASI Preview 3 before diving into an in-depth conversation with guest Ralph Squillace on Microsoft's Wasm strategy.

Ralph shares his journey in open source, from the early adoption of Linux at Microsoft to the rise of containers and the growing impact of WebAssembly. The discussion dives into Microsoft’s strategic role in shaping the future of WebAssembly, the unique advantages it brings to cloud-native development, and the challenges and opportunities facing the technology today.

Whether you're curious about the evolution of containers, WebAssembly’s potential in big tech, or the balance between open standards and corporate innovation, this episode offers expert insights into WebAssembly’s transformative role in modern tech.

Join F5's Joel Moses, guest host Pat Hickey, and Microsoft Developer Advocate Yosh Wuyts as they dive deep into Microsoft's new tool, Wassette, designed to enhance the security and functionality of AI agents through WebAssembly. Learn about Wassette's sandboxing capabilities, its design components like Wasmtime, and its integration with various programming languages. Discover how Wassette leverages the component model to offer a safer alternative for running code and managing permissions. Tune in to find out how Wassette could impact your MCP server configurations and development processes.

Read Yosh's blog Introducing Wassette: WebAssembly-based tools for AI agents: https://opensource.microsoft.com/blog/2025/08/06/introducing-wassette-webassembly-based-tools-for-ai-agents

Join hosts Joel Moses, Oscar Spencer, and Matt Yacobucci, along with special guest Pat Hickey, for part two of their in-depth discussion on the latest WebAssembly proposals and advancements. This episode dives into the phase three, phase two, and phase one proposals in development, covering critical topics such as ESM integration, wide arithmetic, stack switching, and the Wasm component model. The team debates the significance of these features, their implementation stages, and their potential impact on WebAssembly's future. Watch now for the latest updates and insights from the world of WebAssembly!

Dive into the WebAssembly Proposals https://github.com/WebAssembly/proposals

Get ready to unleash the raw truth about WebAssembly! In this episode of WebAssembly Unleashed, hosts Joel Moses, Oscar Spencer, and Matt Yacobucci are joined by guest Pat Hickey for a no-holds-barred deep dive into the latest proposals and advancements shaking up the WebAssembly space. From phase five proposals like tail calls and extended constant expressions to the thorny complexities of garbage collection, multiple memories, and relaxed SIMD—the team doesn’t mince words as they dissect what works, what doesn’t, and what might blow up next. They even take aim at JavaScript integrations, content security policies, and the messy evolution of threading in Wasm. If you're looking for unfiltered, expert takes on what's promising, what's polarizing, and what's downright contentious in the world of WebAssembly, this is an episode you cannot miss. Buckle up!

Dive into the WebAssembly Proposals https://github.com/WebAssembly/proposals

For more from F5's Office of the CTO visit the following sites:
Blogs - https://www.f5.com/company/octo
Reports - https://www.f5.com/services/resources...

Join hosts Joel Moses and Oscar Spencer as they dig into recent developments in the world of WebAssembly, starting with a look at Microsoft's Wassette, an initiative utilizing Wasm to enhance AI agent security. Then hear from special guests Khagan (Khan) Karimov and Arjun Ramesh, two doctoral candidates passionate about innovative WebAssembly research. Hear about Khan's focus on fuzzing Wasm implementations to root out security vulnerabilities, while Arjun explores time travel debugging to revolutionize debugging in embedded systems. Tune in for an insightful episode that highlights the exciting developments in the WebAssembly space!

For more from F5's Office of the CTO visit the following sites:
Blogs - https://www.f5.com/company/octo
Reports - https://www.f5.com/services/resources/reports

Join Joel Moses, Matthew Yacobucci, and guest-host Chris Fallin as they dive into the maturation of WebAssembly technologies and their implementation. Special guest Oliver Medhurst, a former Mozilla engineer, joins the conversation to talk about his project, Porffor, a unique compiler kit for JavaScript that allows ahead-of-time compilation to WebAssembly. The discussion covers the challenges and benefits of ahead-of-time compilation, performance aspects, and the importance of WebAssembly in diverse environments. Oliver also shares insights into building a JavaScript engine from scratch and the community's reaction to his project. Tune in for an in-depth look at the future of WebAssembly and its intersection with JavaScript.

Engage with Porffor:

• GitHub: https://github.com/CanadaHonk/porffor
• Discord: https://discord.com/invite/wPV3WgDGwg

Read more about the recent development from Zig: https://kristoff.it/blog/zig-new-async-io/

Join hosts Joel Moses, Oscar Spencer, and Matt Yacobucci as they dive deep into the world of formal verification with special guest Chris Fallin. In this episode of WebAssembly Unleashed, the team discusses the importance of formal verification in software development, particularly for WebAssembly. Chris, a co-author of the Cranelift compiler and Mozilla alum, explains the concept of formal verification, its significance, and how it can be applied to ensure software correctness and security. The conversation covers a range of topics including type safety, the use of SMT solvers, the challenges in formally verifying compilers, and the potential role of AI in generating formally verified code. Don't miss this insightful discussion if you're keen to learn about cutting-edge techniques to make software more reliable and secure.

Joins hosts Joel Moses and Oscar Spencer as they delve into the world of WebAssembly with special guest Andreas Rossberg, co-designer of the WebAssembly specification. Andreas shares insights on SpecTec, a domain-specific language designed to streamline and verify the WebAssembly specification. The discussion covers the evolution of SpecTec, its impact on WebAssembly proposals, and future possibilities for its application. Additionally, Andreas discusses his background in functional programming, challenges in compiler development, and the surprising uses of WebAssembly in the tech ecosystem. Whether you're a novice or a seasoned developer, this episode offers a comprehensive look into the future of WebAssembly and its growing influence in technology.