In addition to this list, you should read the list [awesome-shell](https://github.com/alebcay/awesome-shell). It is a curated list of awesome command-line frameworks, toolkits, guides and gizmos. You may also want to check [awesome-zsh](https://github.com/unixorn/awesome-zsh-plugins) or [awesome-fish](https://github.com/bucaran/awesome-fish). If you are looking for more lists, check [sindresorhus/awesome](https://github.com/sindresorhus/awesome).
- [The Bash-Hackers Wiki](https://web.archive.org/web/20230406205817/https://wiki.bash-hackers.org/) - Human-readable documentation of any kind about GNU Bash
- [Bash beginner's mistakes](https://web.archive.org/web/20230330234404/https://wiki.bash-hackers.org/scripting/newbie_traps) (by the Bash-Hackers Wiki)
- [Use the Unofficial Bash Strict Mode (Unless You Looove Debugging)](http://redsymbol.net/articles/unofficial-bash-strict-mode/)
- [learnyoubash](https://github.com/denysdovhan/learnyoubash) - An interactive workshopper which will teach you how to use the terminal and write your the first Bash script.
- [Defensive BASH Programming](https://web.archive.org/web/20180917174959/http://www.kfirlavi.com/blog/2012/11/14/defensive-bash-programming) - Methods to defend your programs from breaking as well as keeping the code tidy and clean.
- [zoxide](https://github.com/ajeetdsouza/zoxide) - A better way to navigate your filesystem. Written in Rust, cross-shell, and much faster than other autojumpers.
- [liquidprompt](https://github.com/nojhan/liquidprompt) - A full-featured & carefully designed adaptive prompt for Bash & Zsh
- [mysql-colorize](https://github.com/horosgrisa/mysql-colorize.bash) - Colorization for mysql comand-line client
- [oh-my-git](https://github.com/arialdomartini/oh-my-git) - An opinionated git prompt for bash and zsh
- [progress-bar.sh](https://github.com/edouard-lopez/progress-bar.sh) - Simple & sexy progressbar for `bash`, give it a duration and it will do the rest ![progress-bar.sh in action](http://pix.toile-libre.org/upload/original/1476311497.gif).
- [sexy-bash-prompt](https://github.com/twolfson/sexy-bash-prompt) - Bash prompt with colors, Git statuses, and Git branches
- [bash-sensible](https://github.com/mrzool/bash-sensible) - An attempt at saner Bash defaults
- [BigBash](https://github.com/zalando/bigbash) - Open-source converter that generates a bash one-liner from an SQL Select query, no database necessary
- [balls](https://github.com/jneen/balls) - Bash on Balls
- [bashttpd](https://github.com/avleen/bashttpd) - A web server written in Bash
- [Dropbox-Uploader](https://github.com/andreafabrizi/Dropbox-Uploader) - Dropbox Uploader is a Bash script which can be used to upload, download, list or delete files from Dropbox
- [ngincat](https://github.com/jaburns/ngincat) - Tiny Bash HTTP server using netcat
- [xiringuito](https://github.com/ivanilves/xiringuito) - SSH-based VPN for poors
- [Bash One-Liners](http://www.bashoneliners.com/) - A collection of practical or just pure awesome bash one-liners ([repos](https://github.com/janosgyerik/bashoneliners) by @[janosgyerik](https://github.com/janosgyerik))
- [commandlinefu](http://www.commandlinefu.com/) - A repository for the most elegant and useful UNIX commands
- [assert.sh](https://github.com/lehmannro/assert.sh) - Bash unit testing framework
- [async-bash](https://github.com/zombieleet/async-bash) - implementation of async functions in bash
- [bats](https://github.com/bats-core/bats-core) - Bash Automated Testing System
- [bash3boilerplate](https://github.com/kvz/bash3boilerplate) - Templates to write better Bash scripts
- [bashful](https://github.com/jmcantrell/bashful) - A collection of libraries to simplify writing Bash scripts
- [bashify](https://github.com/zombieleet/bashify) - few helper functions in bash ( especially string manipulation functions)
- [bashing](https://github.com/xsc/bashing) - Smashing Bash into Pieces - Bash framework for creating command line tools
- [bashly](https://github.com/DannyBen/bashly) - Bash command line framework and CLI generator
- [bashmanager](https://github.com/lingtalfi/bashmanager) - mini bash framework for creating command line tools
- [Bashmatic](https://github.com/kigster/bashmatic) - an easy to use DSL library for building BASH-based tooling & installers (900+ functions).
- [bunit](https://github.com/rafritts/bunit) - A unit testing framework for Bash scripts
- [Bash Infinity](https://github.com/niieani/bash-oo-framework) - A modern boilerplate / framework / standard library for bash
- [bash-modules](https://github.com/vlisivka/bash-modules) - a collection of modules for [unofficial strict mode](http://redsymbol.net/articles/unofficial-bash-strict-mode/)
- [/r/bash](https://www.reddit.com/r/bash) - A subreddit dedicated to bash scripting
- [/r/commandline](https://www.reddit.com/r/commandline) - for anything regarding the command line, in any operating system
- [#bash](https://web.libera.chat/?nick=Guest&#bash) - IRC channel on Libera.Chat. The main contributors of the BashGuide, BashFAQ, BashPitfalls and ShellCheck hang around there
Other amazingly awesome lists can be found in [awesome-awesome](https://github.com/emijrp/awesome-awesome) and [awesome-awesomeness](https://github.com/bayandin/awesome-awesomeness).