Lunatic

Lunatic is an Erlang-inspired runtime for WebAssembly

By combining the fault-tolerance and massive concurrency of Erlang with the capability-based security of WebAssembly, it creates a powerful programming model.

Architecture Lunatic is a single executable and runs on Windows, macOS and Linux. It spawns lightweight processes from WebAssembly modules that have their own heap/stack. These processes are preemptively scheduled on a multi-threaded executor.

Processes Lunatic's design is all about super lightweight processes. Processes are fast to create, have a small memory footprint and a low scheduling overhead. They are designed for massive concurrency.

Isolation Lunatic sits between your operating system and the running processes. This allows it to decide on a per process basis what syscalls are going to be forwarded to the operating systems. If you would like to run some untrusted code, you can. Just spawn it inside of a process without any privileges.

Supported features:

• Creating, cancelling & waiting on processes
• Fine-grained process permissions
• Process supervision
• Channel based message passing
• TCP networking
• Filesystem access
• Distributed nodes
• Hot reloading