ICFP/SPLASH 2025
Sun 12 - Sat 18 October 2025 Singapore

WebAssembly is a general-purpose low-level virtual machine. It was the first programming language to be introduced to the Web since JavaScript, and has since been adopted in many other environments, such as edge and cloud computing, mobile computing, blockchains, and embedded systems. Unusually for an industrial language, WebAssembly’s normative specification is stated fully in terms of a pen-and-paper formal semantics. In addition, multiple mechanisations of this semantics have been created and used to prove the soundness of the WebAssembly type system.

The rigor of WebAssembly’s semantics presents new opportunities for researchers in Programming Languages to apply their craft to a widely-used industry technology. This WebAssembly Workshop (WAW) intends to create a space where new ideas for such research can be brainstormed, and where ongoing research work related to WebAssembly can be discussed, critiqued, and iterated on. We also hope to familiarize researchers with the successes and challenges of WebAssembly’s design and specification from an industrial point of view, thereby empowering them to influence the future direction of the language.

WAW has previously run at POPL 2024 and POPL 2025.

Contributions

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You can expect more information about contributions to the workshop soon.