1. BytecountCounting occurrences of a given byte or UTF-8 characters in a slice of memory – fast
2. MomoA Rust proc_macro_attribute to outline conversions from generic functions
4. OverflowerA Rust compiler plugin and support library to annotate overflow behavior
5. FlameAn intrusive flamegraph profiling tool for rust.
6. MutagenBreaking your Rust code for fun and profit
7. FlamerA compiler plugin to insert flame calls
9. optionalA small crate to provide space-efficient Option<_> replacements