Difftastic: https://github.com/Wilfred/difftastic directory diffs, good for theme updates
Tin-Summer: https://github.com/vmchale/tin-summer helps clean up build artifacts
Gfold: https://github.com/nickgerace/gfold show Git repo status
The firehose: https://lib.rs/command-line-utilities this is a live feed of all command line tools written in Rust
curated lists: https://www.libhunt.com/l/rust/topic/command-line-tool