#### CLI Tools &nbsp;[<sup>[TOC]</sup>](#anger-table-of-contents)

##### :black_small_square: Shells

<p>
&nbsp;&nbsp; <a href="https://www.gnu.org/software/bash/"><b>GNU Bash</b></a> - is an sh-compatible shell that incorporates useful features from the Korn shell and C shell.<br>
&nbsp;&nbsp; <a href="https://www.zsh.org/"><b>Zsh</b></a> - is a shell designed for interactive use, although it is also a powerful scripting language.<br>
&nbsp;&nbsp; <a href="https://tcl-lang.org/"><b>tclsh</b></a> - is a very powerful cross-platform shell, suitable for a huge range of uses.<br>
&nbsp;&nbsp; <a href="https://github.com/Bash-it/bash-it"><b>bash-it</b></a> - is a framework for using, developing and maintaining shell scripts and custom commands.<br>
&nbsp;&nbsp; <a href="https://ohmyz.sh/"><b>Oh My ZSH!</b></a> - is the best framework for managing your Zsh configuration.<br>
&nbsp;&nbsp; <a href="https://github.com/oh-my-fish/oh-my-fish"><b>Oh My Fish</b></a> - the Fishshell framework.<br>
&nbsp;&nbsp; <a href="https://github.com/starship/starship"><b>Starship</b></a> - the cross-shell prompt written in Rust.<br>
&nbsp;&nbsp; <a href="https://github.com/romkatv/powerlevel10k"><b>powerlevel10k</b></a> - is a fast reimplementation of Powerlevel9k ZSH theme.<br>
</p>

##### :black_small_square: Shell plugins

<p>
&nbsp;&nbsp; <a href="https://github.com/rupa/z"><b>z</b></a> - tracks the folder you use the most and allow you to jump, without having to type the whole path.<br>
&nbsp;&nbsp; <a href="https://github.com/junegunn/fzf"><b>fzf</b></a> - is a general-purpose command-line fuzzy finder.<br>
&nbsp;&nbsp; <a href="https://github.com/zsh-users/zsh-autosuggestions"><b>zsh-autosuggestions</b></a> - Fish-like autosuggestions for Zsh.<br>
&nbsp;&nbsp; <a href="https://github.com/zsh-users/zsh-syntax-highlighting"><b>zsh-syntax-highlighting</b></a> - Fish shell like syntax highlighting for Zsh.<br>
&nbsp;&nbsp; <a href="https://github.com/unixorn/awesome-zsh-plugins"><b>Awesome ZSH Plugins</b></a> - A list of frameworks, plugins, themes and tutorials for ZSH.<br>
</p>

##### :black_small_square: Managers

<p>
&nbsp;&nbsp; <a href="https://midnight-commander.org/"><b>Midnight Commander</b></a> - is a visual file manager, licensed under GNU General Public License.<br>
&nbsp;&nbsp; <a href="https://github.com/ranger/ranger"><b>ranger</b></a> - is a VIM-inspired filemanager for the console.<br>
&nbsp;&nbsp; <a href="https://github.com/jarun/nnn"><b>nnn</b></a> - is a tiny, lightning fast, feature-packed file manager.<br>
&nbsp;&nbsp; <a href="https://www.gnu.org/software/screen/"><b>screen</b></a> - is a full-screen window manager that multiplexes a physical terminal.<br>
&nbsp;&nbsp; <a href="https://github.com/tmux/tmux/wiki"><b>tmux</b></a> - is a terminal multiplexer, lets you switch easily between several programs in one terminal.<br>
&nbsp;&nbsp; <a href="https://github.com/peikk0/tmux-cssh"><b>tmux-cssh</b></a> - is a tool to set comfortable and easy to use functionality tmux-sessions.<br>
</p>

##### :black_small_square: Text editors

<p>
&nbsp;&nbsp; <a href="http://ex-vi.sourceforge.net/"><b>vi</b></a> - is one of the most common text editors on Unix.<br>
&nbsp;&nbsp; <a href="https://www.vim.org/"><b>vim</b></a> - is a highly configurable text editor.<br>
&nbsp;&nbsp; <a href="https://www.gnu.org/software/emacs/"><b>emacs</b></a> - is an extensible, customizable, free/libre text editor, and more.<br>
&nbsp;&nbsp; <a href="https://github.com/zyedidia/micro"><b>micro</b></a> - is a modern and intuitive terminal-based text editor.<br>
&nbsp;&nbsp; <a href="https://neovim.io/"><b>neovim</b></a> - is a free open source, powerful, extensible and usable code editor.<br>
&nbsp;&nbsp; <a href="https://www.spacemacs.org/"><b>spacemacs</b></a> - a community-driven Emacs distribution.<br>
&nbsp;&nbsp; <a href="https://spacevim.org/"><b>spacevim</b></a> - a community-driven vim distribution.<br>
</p>

##### :black_small_square: Files and directories

<p>
&nbsp;&nbsp; <a href="https://github.com/sharkdp/fd"><b>fd</b></a> - is a simple, fast and user-friendly alternative to find.<br>
&nbsp;&nbsp; <a href="https://dev.yorhel.nl/ncdu"><b>ncdu</b></a> - is an easy to use, fast disk usage analyzer.<br>
</p>

##### :black_small_square: Network

<p>
&nbsp;&nbsp; <a href="https://www.putty.org/"><b>PuTTY</b></a> - is an SSH and telnet client, developed originally by Simon Tatham.<br>
&nbsp;&nbsp; <a href="https://mosh.org/"><b>Mosh</b></a> - is a SSH wrapper designed to keep a SSH session alive over a volatile connection.<br>
&nbsp;&nbsp; <a href="https://eternalterminal.dev/"><b>Eternal Terminal</b></a> - enables mouse-scrolling and tmux commands inside the SSH session.<br>
&nbsp;&nbsp; <a href="https://nmap.org/"><b>nmap</b></a> - is a free and open source (license) utility for network discovery and security auditing.<br>
&nbsp;&nbsp; <a href="https://github.com/zmap/zmap"><b>zmap</b></a> - is a fast single packet network scanner designed for Internet-wide network surveys.<br>
&nbsp;&nbsp; <a href="https://github.com/RustScan/RustScan"><b>Rust Scan</b></a> - to find all open ports faster than Nmap.<br>
&nbsp;&nbsp; <a href="https://github.com/robertdavidgraham/masscan"><b>masscan</b></a> - is the fastest Internet port scanner, spews SYN packets asynchronously.<br>
&nbsp;&nbsp; <a href="https://github.com/gvb84/pbscan"><b>pbscan</b></a> - is a faster and more efficient stateless SYN scanner and banner grabber.<br>
&nbsp;&nbsp; <a href="http://www.hping.org/"><b>hping</b></a> - is a command-line oriented TCP/IP packet assembler/analyzer.<br>
&nbsp;&nbsp; <a href="https://github.com/traviscross/mtr"><b>mtr</b></a> - is a tool that combines the functionality of the 'traceroute' and 'ping' programs in a single tool.<br>
&nbsp;&nbsp; <a href="https://github.com/mehrdadrad/mylg"><b>mylg</b></a> - utility which combines the functions of the different network probes in one diagnostic tool.<br>
&nbsp;&nbsp; <a href="http://netcat.sourceforge.net/"><b>netcat</b></a> - utility which reads and writes data across network connections, using the TCP/IP protocol.<br>
&nbsp;&nbsp; <a href="http://www.dest-unreach.org/socat/"><b>socat</b></a> - utility which transfers data between two objects.<br>
&nbsp;&nbsp; <a href="https://www.tcpdump.org/"><b>tcpdump</b></a> - is a powerful command-line packet analyzer.<br>
&nbsp;&nbsp; <a href="https://www.wireshark.org/docs/man-pages/tshark.html"><b>tshark</b></a> - is a tool that allows us to dump and analyze network traffic (wireshark cli).<br>
&nbsp;&nbsp; <a href="https://termshark.io/"><b>Termshark</b></a> - is a simple terminal user-interface for tshark.<br>
&nbsp;&nbsp; <a href="https://github.com/jpr5/ngrep"><b>ngrep</b></a> - is like GNU grep applied to the network layer.<br>
&nbsp;&nbsp; <a href="http://netsniff-ng.org/"><b>netsniff-ng</b></a> - is a Swiss army knife for your daily Linux network plumbing if you will.<br>
&nbsp;&nbsp; <a href="https://github.com/mechpen/sockdump"><b>sockdump</b></a> - dump unix domain socket traffic.<br>
&nbsp;&nbsp; <a href="https://github.com/google/stenographer"><b>stenographer</b></a> - is a packet capture solution which aims to quickly spool all packets to disk.<br>
&nbsp;&nbsp; <a href="https://github.com/sachaos/tcpterm"><b>tcpterm</b></a> - visualize packets in TUI.<br>
&nbsp;&nbsp; <a href="https://github.com/tgraf/bmon"><b>bmon</b></a> - is a monitoring and debugging tool to capture networking related statistics and prepare them visually.<br>
&nbsp;&nbsp; <a href="http://iptraf.seul.org/2.6/manual.html#installation"><b>iptraf-ng</b></a> - is a console-based network monitoring program for Linux that displays information about IP traffic.<br>
&nbsp;&nbsp; <a href="https://github.com/vergoh/vnstat"><b>vnstat</b></a> - is a network traffic monitor for Linux and BSD.<br>
&nbsp;&nbsp; <a href="https://iperf.fr/"><b>iPerf3</b></a> - is a tool for active measurements of the maximum achievable bandwidth on IP networks.<br>
&nbsp;&nbsp; <a href="https://github.com/Microsoft/Ethr"><b>ethr</b></a> - is a Network Performance Measurement Tool for TCP, UDP & HTTP.<br>
&nbsp;&nbsp; <a href="https://github.com/jwbensley/Etherate"><b>Etherate</b></a> - is a Linux CLI based Ethernet and MPLS traffic testing tool.<br>
&nbsp;&nbsp; <a href="https://github.com/mpolden/echoip"><b>echoip</b></a> - is a IP address lookup service.<br>
&nbsp;&nbsp; <a href="https://github.com/troglobit/nemesis"><b>Nemesis</b></a> - packet manipulation CLI tool; craft and inject packets of several protocols.<br>
&nbsp;&nbsp; <a href="https://github.com/packetfu/packetfu"><b>packetfu</b></a> - a mid-level packet manipulation library for Ruby.<br>
&nbsp;&nbsp; <a href="https://scapy.net/"><b>Scapy</b></a> - packet manipulation library; forge, send, decode, capture packets of a wide number of protocols.<br>
&nbsp;&nbsp; <a href="https://github.com/SecureAuthCorp/impacket"><b>impacket</b></a> - is a collection of Python classes for working with network protocols.<br>
&nbsp;&nbsp; <a href="https://github.com/arthepsy/ssh-audit"><b>ssh-audit</b></a> - is a tool for SSH server auditing.<br>
&nbsp;&nbsp; <a href="https://aria2.github.io/"><b>aria2</b></a> - is a lightweight multi-protocol & multi-source command-line download utility.<br>
&nbsp;&nbsp; <a href="https://github.com/x-way/iptables-tracer"><b>iptables-tracer</b></a> - observe the path of packets through the iptables chains.<br>
&nbsp;&nbsp; <a href="https://github.com/proabiral/inception"><b>inception</b></a> - a highly configurable tool to check for whatever you like against any number of hosts.<br>
&nbsp;&nbsp; <a href="https://mremoteng.org/"><b>mRemoteNG</b></a> - a fork of mRemote, multi-tabbed PuTTy on steroids!<br>
</p>

##### :black_small_square: Network (DNS)

<p>
&nbsp;&nbsp; <a href="https://github.com/farrokhi/dnsdiag"><b>dnsdiag</b></a> - is a DNS diagnostics and performance measurement tools.<br>
&nbsp;&nbsp; <a href="https://github.com/mschwager/fierce"><b>fierce</b></a> - is a DNS reconnaissance tool for locating non-contiguous IP space.<br>
&nbsp;&nbsp; <a href="https://github.com/subfinder/subfinder"><b>subfinder</b></a> - is a subdomain discovery tool that discovers valid subdomains for websites.<br>
&nbsp;&nbsp; <a href="https://github.com/aboul3la/Sublist3r"><b>sublist3r</b></a> - is a fast subdomains enumeration tool for penetration testers.<br>
&nbsp;&nbsp; <a href="https://github.com/OWASP/Amass"><b>amass</b></a> - is tool that obtains subdomain names by scraping data sources, crawling web archives, and more.<br>
&nbsp;&nbsp; <a href="https://github.com/google/namebench"><b>namebench</b></a> - provides personalized DNS server recommendations based on your browsing history.<br>
&nbsp;&nbsp; <a href="https://github.com/blechschmidt/massdns"><b>massdns</b></a> - is a high-performance DNS stub resolver for bulk lookups and reconnaissance.<br>
&nbsp;&nbsp; <a href="https://github.com/guelfoweb/knock"><b>knock</b></a> - is a tool to enumerate subdomains on a target domain through a wordlist.<br>
&nbsp;&nbsp; <a href="https://github.com/DNS-OARC/dnsperf"><b>dnsperf</b></a> - DNS performance testing tools.<br>
&nbsp;&nbsp; <a href="https://github.com/jedisct1/dnscrypt-proxy"><b>dnscrypt-proxy 2</b></a> - a flexible DNS proxy, with support for encrypted DNS protocols.<br>
&nbsp;&nbsp; <a href="https://github.com/dnsdb/dnsdbq"><b>dnsdbq</b></a> - API client providing access to passive DNS database systems.<br>
&nbsp;&nbsp; <a href="https://github.com/looterz/grimd"><b>grimd</b></a> - fast dns proxy, built to black-hole internet advertisements and malware servers.<br>
  &nbsp;&nbsp; <a href="https://github.com/elceef/dnstwist"><b>dnstwist</b></a> - detect typosquatters, phishing attacks, fraud, and brand impersonation.<br>
</p>

##### :black_small_square: Network (HTTP)

<p>
&nbsp;&nbsp; <a href="https://curl.haxx.se/"><b>curl</b></a> - is a command line tool and library for transferring data with URLs.<br>
&nbsp;&nbsp; <a href="https://gitlab.com/davidjpeacock/kurly"><b>kurly</b></a> - is an alternative to the widely popular curl program, written in Golang.<br>
&nbsp;&nbsp; <a href="https://github.com/jakubroztocil/httpie"><b>HTTPie</b></a> - is an user-friendly HTTP client.<br>
&nbsp;&nbsp; <a href="https://github.com/asciimoo/wuzz"><b>wuzz</b></a> - is an interactive cli tool for HTTP inspection.<br>
&nbsp;&nbsp; <a href="https://github.com/summerwind/h2spec"><b>h2spec</b></a> - is a conformance testing tool for HTTP/2 implementation.<br>
&nbsp;&nbsp; <a href="https://github.com/gildasio/h2t"><b>h2t</b></a> - is a simple tool to help sysadmins to hardening their websites.<br>
&nbsp;&nbsp; <a href="https://github.com/trimstray/htrace.sh"><b>htrace.sh</b></a> - is a simple Swiss Army knife for http/https troubleshooting and profiling.<br>
&nbsp;&nbsp; <a href="https://github.com/reorx/httpstat"><b>httpstat</b></a> - is a tool that visualizes curl statistics in a way of beauty and clarity.<br>
&nbsp;&nbsp; <a href="https://github.com/gchaincl/httplab"><b>httplab</b></a> - is an interactive web server.<br>
&nbsp;&nbsp; <a href="https://lynx.browser.org/"><b>Lynx</b></a> - is a text browser for the World Wide Web.<br>
&nbsp;&nbsp; <a href="https://github.com/browsh-org/browsh/"><b>Browsh</b></a> - is a fully interactive, real-time, and modern text-based browser.<br>
&nbsp;&nbsp; <a href="https://github.com/dhamaniasad/HeadlessBrowsers"><b>HeadlessBrowsers</b></a> - a list of (almost) all headless web browsers in existence.<br>
&nbsp;&nbsp; <a href="https://httpd.apache.org/docs/2.4/programs/ab.html"><b>ab</b></a> - is a single-threaded command line tool for measuring the performance of HTTP web servers.<br>
&nbsp;&nbsp; <a href="https://www.joedog.org/siege-home/"><b>siege</b></a> - is an http load testing and benchmarking utility.<br>
&nbsp;&nbsp; <a href="https://github.com/wg/wrk"><b>wrk</b></a> - is a modern HTTP benchmarking tool capable of generating significant load.<br>
&nbsp;&nbsp; <a href="https://github.com/giltene/wrk2"><b>wrk2</b></a> - is a constant throughput, correct latency recording variant of wrk.<br>
&nbsp;&nbsp; <a href="https://github.com/tsenart/vegeta"><b>vegeta</b></a> - is a constant throughput, correct latency recording variant of wrk.<br>
&nbsp;&nbsp; <a href="https://github.com/codesenberg/bombardier"><b>bombardier</b></a> - is a fast cross-platform HTTP benchmarking tool written in Go.<br>
&nbsp;&nbsp; <a href="https://github.com/cmpxchg16/gobench"><b>gobench</b></a> - http/https load testing and benchmarking tool.<br>
&nbsp;&nbsp; <a href="https://github.com/rakyll/hey"><b>hey</b></a> - HTTP load generator, ApacheBench (ab) replacement, formerly known as rakyll/boom.<br>
&nbsp;&nbsp; <a href="https://github.com/tarekziade/boom"><b>boom</b></a> - is a script you can use to quickly smoke-test your web app deployment.<br>
&nbsp;&nbsp; <a href="https://github.com/shekyan/slowhttptest"><b>SlowHTTPTest</b></a> - is a tool that simulates some Application Layer Denial of Service attacks by prolonging HTTP.<br>
&nbsp;&nbsp; <a href="https://github.com/OJ/gobuster"><b>gobuster</b></a> - is a free and open source directory/file & DNS busting tool written in Go.<br>
&nbsp;&nbsp; <a href="https://github.com/ssllabs/ssllabs-scan"><b>ssllabs-scan</b></a> - command-line reference-implementation client for SSL Labs APIs.<br>
&nbsp;&nbsp; <a href="https://github.com/mozilla/http-observatory"><b>http-observatory</b></a> - Mozilla HTTP Observatory cli version.<br>
&nbsp;&nbsp; <a href="https://hurl.dev"><b>Hurl</b></a> - is a command line tool to run and test HTTP requests with plain text.<br>
</p>

##### :black_small_square: SSL

<p>
&nbsp;&nbsp; <a href="https://www.openssl.org/"><b>openssl</b></a> - is a robust, commercial-grade, and full-featured toolkit for the TLS and SSL protocols.<br>
&nbsp;&nbsp; <a href="https://gnutls.org/manual/html_node/gnutls_002dcli-Invocation.html"><b>gnutls-cli</b></a> - client program to set up a TLS connection to some other computer.<br>
&nbsp;&nbsp; <a href="https://github.com/nabla-c0d3/sslyze"><b>sslyze
</b></a> - fast and powerful SSL/TLS server scanning library.<br>
&nbsp;&nbsp; <a href="https://github.com/rbsec/sslscan"><b>sslscan</b></a> - tests SSL/TLS enabled services to discover supported cipher suites.<br>
&nbsp;&nbsp; <a href="https://github.com/drwetter/testssl.sh"><b>testssl.sh</b></a> - testing TLS/SSL encryption anywhere on any port.<br>
&nbsp;&nbsp; <a href="https://github.com/mozilla/cipherscan"><b>cipherscan</b></a> - a very simple way to find out which SSL ciphersuites are supported by a target.<br>
&nbsp;&nbsp; <a href="http://www.tarsnap.com/spiped.html"><b>spiped</b></a> - is a utility for creating symmetrically encrypted and authenticated pipes between socket addresses.<br>
&nbsp;&nbsp; <a href="https://github.com/certbot/certbot"><b>Certbot</b></a> - is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server.<br>
&nbsp;&nbsp; <a href="https://github.com/FiloSottile/mkcert"><b>mkcert</b></a> - simple zero-config tool to make locally trusted development certificates with any names you'd like.<br>
&nbsp;&nbsp; <a href="https://github.com/square/certstrap"><b>certstrap</b></a> - tools to bootstrap CAs, certificate requests, and signed certificates.<br>
&nbsp;&nbsp; <a href="https://github.com/yassineaboukir/sublert"><b>Sublert</b></a> - is a security and reconnaissance tool to automatically monitor new subdomains.<br>
&nbsp;&nbsp; <a href="https://github.com/trimstray/mkchain"><b>mkchain</b></a> - open source tool to help you build a valid SSL certificate chain.<br>
&nbsp;&nbsp; <a href="https://github.com/Matty9191/ssl-cert-check"><b>ssl-cert-check</b></a> - SSL Certification Expiration Checker.<br>
</p>

##### :black_small_square: Security

<p>
&nbsp;&nbsp; <a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/5/html/deployment_guide/ch-selinux"><b>SELinux</b></a> - provides a flexible Mandatory Access Control (MAC) system built into the Linux kernel.<br>
&nbsp;&nbsp; <a href="https://wiki.ubuntu.com/AppArmor"><b>AppArmor</b></a> - proactively protects the operating system and applications from external or internal threats.<br>
&nbsp;&nbsp; <a href="https://github.com/grapheneX/grapheneX"><b>grapheneX</b></a> - Automated System Hardening Framework.<br>
&nbsp;&nbsp; <a href="https://github.com/dev-sec/"><b>DevSec Hardening Framework</b></a> - Security + DevOps: Automatic Server Hardening.<br>
</p>

##### :black_small_square: Auditing Tools

<p>
&nbsp;&nbsp; <a href="https://www.ossec.net/"><b>ossec</b></a> - actively monitoring all aspects of system activity with file integrity monitoring.<br>
&nbsp;&nbsp; <a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security_guide/chap-system_auditing"><b>auditd</b></a> - provides a way to track security-relevant information on your system.<br>
&nbsp;&nbsp; <a href="https://www.nongnu.org/tiger/"><b>Tiger</b></a> - is a security tool that can be use both as a security audit and intrusion detection system.<br>
&nbsp;&nbsp; <a href="https://cisofy.com/lynis/"><b>Lynis</b></a> - battle-tested security tool for systems running Linux, macOS, or Unix-based operating system.<br>
&nbsp;&nbsp; <a href="https://github.com/rebootuser/LinEnum"><b>LinEnum</b></a> - scripted Local Linux Enumeration & Privilege Escalation Checks.<br>
&nbsp;&nbsp; <a href="https://github.com/installation/rkhunter"><b>Rkhunter</b></a> - scanner tool for Linux systems that scans backdoors, rootkits and local exploits on your systems.<br>
&nbsp;&nbsp; <a href="https://github.com/hasherezade/pe-sieve"><b>PE-sieve</b></a> - is a light-weight tool that helps to detect malware running on the system.<br>
&nbsp;&nbsp; <a href="https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite"><b>PEASS</b></a> - privilege escalation tools for Windows and Linux/Unix and MacOS.<br>
</p>

##### :black_small_square: System Diagnostics/Debuggers

<p>
&nbsp;&nbsp; <a href="https://github.com/strace/strace"><b>strace</b></a> - diagnostic, debugging and instructional userspace utility for Linux.<br>
&nbsp;&nbsp; <a href="http://dtrace.org/blogs/about/"><b>DTrace</b></a> - is a performance analysis and troubleshooting tool.<br>
&nbsp;&nbsp; <a href="https://en.wikipedia.org/wiki/Ltrace"><b>ltrace</b></a> - is a library call tracer, used to trace calls made by programs to library functions.<br>
&nbsp;&nbsp; <a href="https://github.com/brainsmoke/ptrace-burrito"><b>ptrace-burrito</b></a> - is a friendly wrapper around ptrace.<br>
&nbsp;&nbsp; <a href="https://github.com/brendangregg/perf-tools"><b>perf-tools</b></a> - performance analysis tools based on Linux perf_events (aka perf) and ftrace.<br>
&nbsp;&nbsp; <a href="https://github.com/iovisor/bpftrace"><b>bpftrace</b></a> - high-level tracing language for Linux eBPF.<br>
&nbsp;&nbsp; <a href="https://github.com/draios/sysdig"><b>sysdig</b></a> - system exploration and troubleshooting tool with first class support for containers.<br>
&nbsp;&nbsp; <a href="http://www.valgrind.org/"><b>Valgrind</b></a> - is an instrumentation framework for building dynamic analysis tools.<br>
&nbsp;&nbsp; <a href="https://github.com/gperftools/gperftools"><b>gperftools</b></a> - high-performance multi-threaded malloc() implementation, plus some performance analysis tools.<br>
&nbsp;&nbsp; <a href="https://nicolargo.github.io/glances/"><b>glances</b></a> - cross-platform system monitoring tool written in Python.<br>
&nbsp;&nbsp; <a href="https://github.com/hishamhm/htop"><b>htop</b></a> - interactive text-mode process viewer for Unix systems. It aims to be a better 'top'.<br>
&nbsp;&nbsp; <a href="https://github.com/aristocratos/bashtop"><b>bashtop</b></a> - Linux resource monitor written in pure Bash.<br>
&nbsp;&nbsp; <a href="http://nmon.sourceforge.net/pmwiki.php"><b>nmon</b></a> - a single executable for performance monitoring and data analysis.<br>
&nbsp;&nbsp; <a href="https://www.atoptool.nl/"><b>atop</b></a> - ASCII performance monitor. Includes statistics for CPU, memory, disk, swap, network, and processes.<br>
&nbsp;&nbsp; <a href="https://en.wikipedia.org/wiki/Lsof"><b>lsof</b></a> - displays in its output information about files that are opened by processes.<br>
&nbsp;&nbsp; <a href="http://www.brendangregg.com/flamegraphs.html"><b>FlameGraph</b></a> - stack trace visualizer.<br>
&nbsp;&nbsp; <a href="https://github.com/zevv/lsofgraph"><b>lsofgraph</b></a> - convert Unix lsof output to a graph showing FIFO and UNIX interprocess communication.<br>
&nbsp;&nbsp; <a href="https://github.com/mozilla/rr"><b>rr</b></a> - is a lightweight tool for recording, replaying and debugging execution of applications.<br>
&nbsp;&nbsp; <a href="https://pcp.io/index.html"><b>Performance Co-Pilot</b></a> - a system performance analysis toolkit.<br>
&nbsp;&nbsp; <a href="https://github.com/sharkdp/hexyl"><b>hexyl</b></a> - a command-line hex viewer.<br>
&nbsp;&nbsp; <a href="https://github.com/p403n1x87/austin"><b>Austin</b></a> - Python frame stack sampler for CPython.<br>
</p>

##### :black_small_square: Log Analyzers

<p>
&nbsp;&nbsp; <a href="https://github.com/rcoh/angle-grinder"><b>angle-grinder</b></a> - slice and dice log files on the command line.<br>
&nbsp;&nbsp; <a href="https://lnav.org"><b>lnav</b></a> - log file navigator with search and automatic refresh.<br>
&nbsp;&nbsp; <a href="https://goaccess.io/"><b>GoAccess</b></a> - real-time web log analyzer and interactive viewer that runs in a terminal.<br>
&nbsp;&nbsp; <a href="https://github.com/lebinh/ngxtop"><b>ngxtop</b></a> - real-time metrics for nginx server.<br>
</p>

##### :black_small_square: Databases

<p>
&nbsp;&nbsp; <a href="https://github.com/xo/usql"><b>usql</b></a> - universal command-line interface for SQL databases.<br>
&nbsp;&nbsp; <a href="https://github.com/dbcli/pgcli"><b>pgcli</b></a> - postgres CLI with autocompletion and syntax highlighting.<br>
&nbsp;&nbsp; <a href="https://github.com/dbcli/mycli"><b>mycli</b></a> - terminal client for MySQL with autocompletion and syntax highlighting.<br>
&nbsp;&nbsp; <a href="https://github.com/dbcli/litecli"><b>litecli</b></a> - SQLite CLI with autocompletion and syntax highlighting.<br>
  &nbsp;&nbsp; <a href="https://github.com/dbcli/mssql-cli"><b>mssql-cli</b></a> - SQL Server CLI with autocompletion and syntax highlighting.<br>
&nbsp;&nbsp; <a href="https://github.com/osquery/osquery"><b>OSQuery</b></a> - is a SQL powered operating system instrumentation, monitoring, and analytics framework.<br>
&nbsp;&nbsp; <a href="https://github.com/ankane/pgsync"><b>pgsync</b></a> - sync data from one Postgres database to another.<br>
&nbsp;&nbsp; <a href="https://github.com/laixintao/iredis"><b>iredis</b></a> - a terminal client for redis with autocompletion and syntax highlighting.<br>
&nbsp;&nbsp; <a href="https://www.schemacrawler.com/diagramming.html"><b>SchemaCrawler</b></a> - generates an E-R diagram of your database.<br>
</p>

##### :black_small_square: TOR

<p>
&nbsp;&nbsp; <a href="https://github.com/GouveaHeitor/nipe"><b>Nipe</b></a> - script to make Tor Network your default gateway.<br>
&nbsp;&nbsp; <a href="https://github.com/trimstray/multitor"><b>multitor</b></a> - a tool that lets you create multiple TOR instances with a load-balancing.<br>
</p>

##### :black_small_square: Messengers/IRC Clients

<p>
&nbsp;&nbsp; <a href="https://irssi.org"><b>Irssi</b></a> - is a free open source terminal based IRC client.<br>
&nbsp;&nbsp; <a href="https://weechat.org/"><b>WeeChat</b></a> - is an extremely extensible and lightweight IRC client.<br>
</p>

##### :black_small_square: Productivity

<p>
&nbsp;&nbsp; <a href="https://taskwarrior.org"><b>taskwarrior</b></a> - task management system, todo list <br>
</p>

##### :black_small_square: Other

<p>
&nbsp;&nbsp; <a href="https://github.com/skx/sysadmin-util"><b>sysadmin-util</b></a> - tools for Linux/Unix sysadmins.<br>
&nbsp;&nbsp; <a href="http://inotify.aiken.cz/"><b>incron</b></a> - is an inode-based filesystem notification technology.<br>
&nbsp;&nbsp; <a href="https://github.com/axkibe/lsyncd"><b>lsyncd</b></a> - synchronizes local directories with remote targets (Live Syncing Daemon).<br>
&nbsp;&nbsp; <a href="https://github.com/rgburke/grv"><b>GRV</b></a> - is a terminal based interface for viewing Git repositories.<br>
&nbsp;&nbsp; <a href="https://jonas.github.io/tig/"><b>Tig</b></a> - text-mode interface for Git.<br>
&nbsp;&nbsp; <a href="https://github.com/tldr-pages/tldr"><b>tldr</b></a> - simplified and community-driven man pages.<br>
&nbsp;&nbsp; <a href="https://github.com/mholt/archiver"><b>archiver</b></a> - easily create and extract .zip, .tar, .tar.gz, .tar.bz2, .tar.xz, .tar.lz4, .tar.sz, and .rar.<br>
&nbsp;&nbsp; <a href="https://github.com/tj/commander.js"><b>commander.js</b></a> - minimal CLI creator in JavaScript.<br>
&nbsp;&nbsp; <a href="https://github.com/tomnomnom/gron"><b>gron</b></a> - make JSON greppable!<br>
&nbsp;&nbsp; <a href="https://github.com/itchyny/bed"><b>bed</b></a> - binary editor written in Go.<br>
</p>

#### GUI Tools &nbsp;[<sup>[TOC]</sup>](#anger-table-of-contents)
