Optimizer and compiler/toolchain library for WebAssembly

WebAssembly specification, reference interpreter, and test suite.

Threads and Atomics in WebAssembly

Branch of the spec repo scoped to discussion of SIMD in WebAssembly

Conventions supporting interoperatibility between tools working with WebAssembly.

Proposal to add exception handling to WebAssembly

Proposal for adding basic reference types (anyref)

Bulk memory operations

Import & export of mutable globals