https://beyondgrep.com/ - is a tool like grep, optimized for programmers
https://github.com/ggreer/the_silver_searcher - A code searching tool similar to ack, with a focus on speed
https://github.com/sharkdp/bat - A cat clone with wings, supports syntax highlighting for a large number of programming and markup languages
https://github.com/jtyr/gbt - Highly configurable prompt builder for Bash and ZSH written in Go.
https://github.com/jcsalterego/historian - Command-line utility for managing shell history in a SQLite database
https://stedolan.github.io/jq/ - is a lightweight and flexible command-line JSON processor
https://github.com/jmespath/jp - is a command line interface to JMESPath, an expression language for manipulating JSON
https://www.mycli.net/ - is a command line interface for MySQL, MariaDB, and Percona with auto-completion and syntax highlighting
https://dev.yorhel.nl/ncdu - is a disk usage analyzer with an ncurses interface.
https://github.com/peco/peco - interactive filtering tool for the command line
https://github.com/denilsonsa/prettyping - is a wrapper around the standard ping tool, making the output prettier, more colorful, more compact, and easier to read.
http://harelba.github.io/q/ - Run SQL directly on CSV or TSV files
https://ranger.github.io/ - A VIM-inspired filemanager for the console
https://github.com/BurntSushi/ripgrep - recursively searches directories for a regex pattern
https://bitbucket.org/mahlon/shelldap/src/default/ - shell-like interface for browsing LDAP servers and editing their content
https://jonas.github.io/tig/ - text-mode interface for Git
https://github.com/tldr-pages/tldr - Simplified and community-driven man pages