rand_chacha vs rand_core
No leader: the top candidate rand_chacha has only 0.22 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
What each one is
The product in its own terms, so the numbers below have context.
rand_chacha
A Rust library providing ChaCha pseudo-random number generation for cryptographic and general-purpose use cases. Integrated into the Rust random ecosystem as part of the broader rand crate.
rand_core
An open-source Rust library providing foundational traits for implementing random number generation algorithms. It supplies the core interfaces that RNG implementations build on, along with helper utilities for algorithm development.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.