Written in Rust:

    - fd: A simple, fast and user-friendly alternative to 'find'
    https://github.com/sharkdp/fd

    - ripgrep: ripgrep recursively searches directories for a regex pattern
    https://github.com/BurntSushi/ripgrep

    - exa: Replacement for 'ls' written in Rust
    https://github.com/ogham/exa

    - bat: A 'cat' replacement.  I recommend following the customizations.
    https://github.com/sharkdp/bat

Written in Python:

    - asciinema: Terminal session recorder
    https://github.com/asciinema/asciinema

    - httpie: Modern command line HTTP client
    https://github.com/jakubroztocil/httpie

    - visidata: A terminal spreadsheet multitool for discovering and arranging data
    https://github.com/saulpw/visidata

    - youtube-dl: Command-line program to download videos from YouTube.com and other video sites
    https://github.com/rg3/youtube-dl

    - pgcli:  Postgres cli with autocomplete and syntax highlighting
    https://github.com/dbcli/pgcli

Written in C

    - jq: Command-line JSON processor
    https://github.com/stedolan/jq

    - tmux:  a terminal multiplexer
    https://github.com/tmux/tmux

    - pspg:  postgres pager (you can combine it with pgcli)
    https://github.com/okbob/pspg