fastdiff

fastdiff is a Python library (current version 0.3.0) that offers a fast, native implementation of a diff algorithm, including a pure Python fallback. It re-implements the core functionality of Python's built-in `difflib` by leveraging Rust compiled to WebAssembly, which can lead to significant performance improvements for string comparisons. The project has an infrequent release cadence, with its last update in May 2021.