added 'Developers' subsection; minor updates

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -492,6 +492,7 @@ performance of any of your sites from across the globe.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://www.unbound.net/"><b>Unbound</b></a> - validating, recursive, and caching DNS resolver (with TLS).<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://www.knot-resolver.cz/"><b>Knot Resolver</b></a> - caching full resolver implementation, including both a resolver library and a daemon.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/pi-hole/pi-hole"><b>pi-hole</b></a> - the Pi-hole® is a DNS sinkhole that protects your devices from unwanted content.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/stamparm/maltrail"><b>maltrail</b></a> - malicious traffic detection system.<br>
 </p>
 
 #### Networks &nbsp;[<sup>[TOC]</sup>](#anger-table-of-contents)
@@ -607,11 +608,19 @@ performance of any of your sites from across the globe.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/Kickball/awesome-selfhosted"><b>Awesome-Selfhosted</b></a> - list of Free Software network services and web applications which can be hosted locally.<br>
 </p>
 
+##### :black_small_square: Developers
+
+<p>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/thedaviddias/Front-End-Checklist"><b>Front-End-Checklist</b></a> - the perfect Front-End Checklist for modern websites and meticulous developers.<br>
+</p>
+
 ##### :black_small_square: Security/Pentesting
 
 <p>
-&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/qazbnm456/awesome-web-security"><b>Awesome Web Security</b></a> - curated list of Web Security materials and resources.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/qazbnm456/awesome-web-security"><b>Awesome Web Security</b></a> - a curated list of Web Security materials and resources.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/joe-shenouda/awesome-cyber-skills"><b>awesome-cyber-skills</b></a> - a curated list of hacking environments where you can train your cyber skills.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/infosecn1nja/Red-Teaming-Toolkit"><b>Red-Teaming-Toolkit</b></a> - a collection of open source and commercial tools that aid in red team operations.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/snoopysecurity/awesome-burp-extensions"><b>awesome-burp-extensions</b></a> - a curated list of amazingly awesome Burp Extensions.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/Hack-with-Github/Free-Security-eBooks"><b>Free Security eBooks</b></a> - list of a Free Security and Hacking eBooks.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/k4m4/movies-for-hackers"><b>Movies for Hackers</b></a> - list of movies every hacker & cyberpunk must watch.<br>
 </p>
@@ -700,6 +709,7 @@ Linux Security Expert</b></a> - trainings, howtos, checklists, security tools an
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://guif.re/"><b>Guifre Ruiz Notes</b></a> - collection of security, system, network and pentest cheatsheets.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://blog.safebuff.com/2016/07/03/SSRF-Tips/index.html"><b>SSRF Tips</b></a> - a collection of SSRF Tips.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://shell-storm.org/repo/CTF/"><b>shell-storm repo CTF</b></a> - great archive of CTFs.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/bl4de/ctf"><b>ctf</b></a> - CTF (Capture The Flag) writeups, code snippets, notes, scripts.<br>
 </p>
 
 ##### :black_small_square: Bounty programs