:small_orange_diamond: Oh My ZSH! - the best framework for managing your Zsh configuration.
:small_orange_diamond: bash-it - a community Bash framework.
:small_orange_diamond: Midnight Commander - visual file manager, licensed under GNU General Public License.
:small_orange_diamond: screen - full-screen window manager that multiplexes a physical terminal.
:small_orange_diamond: tmux - terminal multiplexer, lets you switch easily between several programs in one terminal.
:small_orange_diamond: Curl - command line tool and library
for transferring data with URLs.
:small_orange_diamond: HTTPie - a user-friendly HTTP client.
:small_orange_diamond: gnutls-cli - client program to set up a TLS connection to some other computer.
:small_orange_diamond: netcat - networking utility which reads and writes data across network connections, using the TCP/IP protocol.
:small_orange_diamond: tcpdump - powerful command-line packet analyzer.
:small_orange_diamond: pgcli - postgres CLI with autocompletion and syntax highlighting.
:small_orange_diamond: SSL Server Test - free online service performs a deep analysis of the configuration of any SSL web server.
:small_orange_diamond: SSL Server Test (DEV) - free online service performs a deep analysis of the configuration of any SSL web server.
:small_orange_diamond: ImmuniWeb® SSLScan - test SSL/TLS (PCI DSS, HIPAA and NIST).
:small_orange_diamond: Report URI - monitoring security policies like CSP and HPKP.
:small_orange_diamond: CSP Evaluator - allows developers and security experts to check if a Content Security Policy.
:small_orange_diamond: Common CA Database - repository of information about CAs, and their root and intermediate certificates.
:small_orange_diamond: CERTSTREAM - real-time certificate transparency log update stream.
:small_orange_diamond: Security Headers - analyse the HTTP response headers (with rating system to the results).
:small_orange_diamond: Observatory by Mozilla - set of tools to analyze your website.
:small_orange_diamond: ViewDNS - one source for free DNS related tools and information.
:small_orange_diamond: DNS Spy - monitor, validate and verify your DNS configurations.
:small_orange_diamond: DNSlytics - online investigation tool.
:small_orange_diamond: MX Toolbox - all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.
:small_orange_diamond: Censys - platform that helps information security practitioners discover, monitor, and analyze devices.
:small_orange_diamond: Shodan - the world's first search engine for Internet-connected devices.
:small_orange_diamond: GreyNoise - mass scanner (such as Shodan and Censys).
:small_orange_diamond: Netcraft - detailed report about the site, helping you to make informed choices about their integrity.
:small_orange_diamond: Security Trails - APIs for Security Companies, Researchers and Teams.
:small_orange_diamond: Online Curl - curl test, analyze HTTP Response Headers.
:small_orange_diamond: Ping.eu - online Ping, Traceroute, DNS lookup, WHOIS and others.
:small_orange_diamond: Network-Tools - network tools for webmasters, IT technicians & geeks.
:small_orange_diamond: URL Encode/Decode - tool from above to either encode or decode a string of text.
:small_orange_diamond: GTmetrix - analyze your site’s speed and make it faster.
:small_orange_diamond: Sucuri loadtimetester - test here the
performance of any of your sites from across the globe.
:small_orange_diamond: Random.org - generate random passwords.
:small_orange_diamond: Gotcha? - list of 1.4 billion accounts circulates around the Internet.
:small_orange_diamond: have i been pwned? - check if you have an account that has been compromised in a data breach.
:small_orange_diamond: pure-bash-bible - a collection of pure bash alternatives to external processes.
:small_orange_diamond: The Bash Hackers Wiki - hold documentation of any kind about GNU Bash.
:small_orange_diamond: nixCraft - linux and unix tutorials for new and seasoned sysadmin.
:small_orange_diamond: TecMint - the ideal Linux blog for Sysadmins & Geeks.
:small_orange_diamond: Hacking Articles - LRaj Chandel's Security & Hacking Blog.
:small_orange_diamond: Brendan Gregg's Blog - Brendan Gregg is an industry expert in computing performance and cloud computing.
:small_orange_diamond: Gynvael "GynDream" Coldwind - Gynvael is a IT security engineer at Google.
:small_orange_diamond: Michał "lcamtuf" Zalewski - "white hat" hacker, computer security expert.
:small_orange_diamond: Mattias Geniar - developer, Sysadmin, Blogger, Podcaster and Public Speaker.
:small_orange_diamond: Nick Craver - Software Developer and Systems Administrator for Stack Exchange.
:small_orange_diamond: Robert Penz - IT security Expert.
:small_orange_diamond: Scott Helme - Security Researcher, international speaker and founder of securityheaders.com and report-uri.com.
:small_orange_diamond: Kacper Szurek - Detection Engineer at ESET.
:small_orange_diamond: Troy Hunt - Microsoft Regional Director and Microsoft Most Valuable Professional for Developer Security.
:small_orange_diamond: OpenBSD - multi-platform 4.4BSD-based UNIX-like operating system.
:small_orange_diamond: HardenedBSD - HardenedBSD aims to implement innovative exploit mitigation and security solutions.
:small_orange_diamond: Varnish HTTP Cache - HTTP accelerator designed for content-heavy dynamic web sites.
:small_orange_diamond: Emerald Onion - Seattle-based encrypted-transit internet service provider.
:small_orange_diamond: commandlinefu.com - command line diamonds, created and voted on by our members.
:small_orange_diamond: Bash One-Liners - practical, well-explained Bash one-liners, and promote best practices in Bash shell scripting.
:small_orange_diamond: Awesome Sysadmin - amazingly awesome open source sysadmin resources.
:small_orange_diamond: Awesome Shell - awesome command-line frameworks, toolkits, guides and gizmos.
:small_orange_diamond: Awesome-Hacking - awesome lists for hackers, pentesters and security researchers.
:small_orange_diamond: Openbugbounty - allows any security researcher reporting a vulnerability on any website.