Network & Protocol Analysis

Wireshark https://www.wireshark.org
WinPcap http://www.winpcap.org
Nessus http://www.nessus.org
Firebug https://getfirebug.com
Essental NetTools https://www.tamos.com
Squid Proxy http://www.squid-cache.org
IEEE https://www.ieee.org

Web Development

The Web platform: Browser technologies https://platform.html5.org
Modernizr https://modernizr.com/
HTML5 Boilerplate https://html5boilerplate.com/
ChartJS https://www.chartjs.org/
Node.js https://nodejs.org
Brackets http://brackets.io
Font Awesome https://www.fontawesome.com
HTML 5.2 https://www.w3.org/TR/html52/
Fiddler2 http://www.fiddler2.com
Firebug https://addons.mozilla.org/en-US/firefox/addon/1843
Web Developer https://addons.mozilla.org/en-US/firefox/addon/60
DOM Inspector https://addons.mozilla.org/en-US/firefox/addon/6622
CSS Zen Garden http://www.csszengarden.com
W3C Link Checker https://validator.w3.org/checklink
W3C CSS Validator https://jigsaw.w3.org/css-validator
W3C Markup Validator https://validator.w3.org
W3Schools https://www.w3schools.com
GIMP https://www.gimp.org
Notepad++ https://notepad-plus-plus.org
Lipsum https://www.lipsum.com
Plunker https://plnkr.co
HTMLiveCode http://htmlivecode.com
caniuse https://caniuse.com
Bootstrap https://getbootstrap.com/
jQuery https://jquery.com/
Nuget https://nuget.org
GitHub https://github.com/

General Development

Etcher https://www.balena.io/etcher/
Mozilla Developer Network https://developer.mozilla.org/en-US/
NLog https://nlog-project.org/
Bugzilla https://www.bugzilla.org
Atom IDE https://atom.io/
Android Studio https://developer.android.com/studio/
Eclipse https://www.eclipse.org/ide/

File Compression

7-Zip https://www.7-zip.org
WinZip https://www.winzip.com
WinRAR https://www.rarlab.com

File and Directory Management
ZTreeWin https://www.ztree.com
FileZilla https://filezilla-project.org
Macrium Reflect Free https://www.macrium.com/reflectfree
HxD https://mh-nexus.de/en/hxd/
Paint.NET https://www.getpaint.net/

SMS
OzekiNG http://www.ozekisms.com
   
Xceed http://xceed.com

Installation & Deployment
WiX http://wixtoolset.org
WixEdit https://wixedit.github.io
Orca (Part of Microsoft's Plaform SDK)

Microsoft's MSDN https://msdn.microsoft.com
OpenSSL https://www.openssl.org
Ophcrack http://ophcrack.sourceforge.net
UltraEdit & UltraCompare https://www.ultraedit.com
Fedora https://getfedora.org/
Ubuntu https://www.ubuntu.com

Emulation & Virtualisation
Knoppix https://knoppix.net
VirtualBox https://www.virtualbox.org
Microsoft Virtual PC http://www.microsoft.com/Windows/virtual-pc/default.aspx
LINQPad https://www.linqpad.net
mp3tag https://www.mp3tag.de

.NET Resources & Component Suppliers
obout https://www.obout.com
/n software https://www.nsoftware.com
Dundas https://www.dundas.com
Mono Project https://www.mono-project.com
.NET Reflector https://www.red-gate.com

Microprocessor & IC

Arduino https://www.arduino.cc/
Microchip https://www.microchip.com
Cypress Semiconductor http://www.cypress.com
ON Semiconductor https://www.onsemi.com
Zilog https://www.zilog.com
ARM https://www.arm.com
MIPS https://www.mips.com

PCB Design and Manufacture
Eagle http://www.cadsoft.de
PCB Pool http://www.pcb-pool.com
Multi PCB http://www.multipcb.co.uk

Electronic Component Suppliers
Farnell https://uk.farnell.com
RS http://rswww.com
DigiKey https://www.digikey.co.uk
Maplin https://www.maplin.co.uk
Cool Components http://www.coolcomponents.co.uk

Search Engines
Google http://www.google.com
Yahoo! http://www.yahoo.com
Ask Jeeves http://uk.ask.com
Bing http://www.bing.com

Microsoft http://www.microsoft.com

Entertainment
YouTube https://www.youtube.com

Adobe https://www.adobe.com

Web Browsers

Internet Explorer http://www.microsoft.com/ie
Firefox http://www.mozilla-europe.org
Opera http://www.opera.com

General Information & Reference
Wikipedia https://www.wikipedia.org
Reference https://www.reference.com

PC Manufacturers
Dell https://www.dell.co.uk

DVD & Video Tools
AnyDVD http://www.slysoft.com
CloneDVD
DVD Decrypter
DVD Shrink
DivX http://www.divx.com
Nero http://www.nero.com

VOIP & Instant Messaging
Skype https://www.skype.com/en/

Network & PC Security
Watchguard https://www.watchguard.com
Insecure https://insecure.org
SecTools https://sectools.org
AVG http://www.avg.com
SSL Tester https://www.ssllabs.com/ssltest

Remote Access

RealVNC http://www.realvnc.com
LogMeIn https://www.logmein.com

Nintendo DS & Gameboy

DeSmuME http://desmume.org, http://sourceforge.net/projects/desmume
Romulation http://www.romulation.net
R4 Site http://www.r4i-software.com
R4 Site http://www.r4ds-ds.com
DevKitPro https://devkitpro.org/
LemProject http://www.mrdictionary.net/lemmings
GBA Dev http://www.gbadev.org
PDRoms http://www.pdroms.de
Homebrew Directory http://www.ds-xtra.com
R4i-SDHC http://www.r4i-sdhc.com
DSOrganise http://www.dragonminded.com
Homebrew Info http://osdl.sourceforge.net/main/documentation/misc/nintendo-DS/homebrew-guide/HomebrewForDS.html

Database

MySQL https://www.mysql.com
Webyog https://www.webyog.com
SQL Express http://www.microsoft.com/express/database

Online Shopping
MyMemory https://www.mymemory.co.uk
Snapfish https://www.snapfish.co.uk/home
Ebay https://www.ebay.co.uk
eBuyer https://www.ebuyer.com
Amazon https://www.amazon.co.uk
Rakuten https://www.rakuten.co.uk/

Hard Disk & Storage Manufacturers
Western Digital https://www.wdc.com
Seagate https://www.seagate.com
SanDisk https://www.sandisk.com

Internet

Nominet https://www.nominet.uk
RIPE https://www.ripe.net
Domain Tools https://www.domaintools.com
123-reg https://www.123-reg.co.uk
ARIN https://www.arin.net
RapidSSL https://www.rapidssl.com
Let's Encrypt https://letsencrypt.org/
Certify the Web https://certifytheweb.com
SpeedTest.net http://www.speedtest.net
hMailServer http://www.hmailserver.com

Book Publishers
Wrox http://www.wrox.com
Wiley https://www.wiley.com
O'Reilly https://www.oreilly.com

SQL Exam Study
SQL Regular Identifiers Link...
Data Types Link...
Database Functions Link...
Pages & Extents Link...
Index Design Guide Link...
Heaps Link...
Clustered and Non-Clustered Indexes Link...
Cursors https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms181441(v=sql.110)
CREATE VIEW https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms187956(v=sql.110)
Partitioned Views https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms190019(v=sql.105)
Creating Distributed Partitioned Views https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms188299(v=sql.105)
Create Indexed Views https://docs.microsoft.com/en-us/sql/relational-databases/views/create-indexed-views?view=sql-server-2017
SET IMPLICIT_TRANSACTIONS https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms187807(v=sql.110)
ALTER TABLE https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms190273(v=sql.110)
Deterministic and Nondeterministic Functions https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms178091(v=sql.110)
Data Type Precedence https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2012/ms190309(v=sql.110)
COALESCE vs. ISNULL https://www.itprotoday.com/sql-server/coalesce-vs-isnull
Querying with Transact SQL https://channel9.msdn.com/Series/Querying-with-Transact-SQL
Querying SQL Server 2012 https://channel9.msdn.com/Series/Querying-SQL-Server-2012
Developing Microsoft SQL Server Databases https://mva.microsoft.com/en-US/training-courses/developing-microsoft-sql-server-databases-8482
Designing Solutions for SQL Server https://mva.microsoft.com/en-US/training-courses/designing-solutions-for-sql-server-8484
Querying Microsoft SQL Server 2012 Databases Jumpstart https://mva.microsoft.com/en-US/training-courses/querying-microsoft-sql-server-2012-databases-jump-start-8241
Boost your T-SQL with the APPLY Operator https://mva.microsoft.com/en-US/training-courses/boost-your-tsql-with-the-apply-operator-8270
Install SQL 2017 on Linux Link...
Azure Data Studio https://docs.microsoft.com/en-us/sql/azure-data-studio/what-is?view=sql-server-2017

Training
Pluralsight https://www.pluralsight.com
Microsoft Docs https://docs.microsoft.com/en-us
Safari https://www.safaribooksonline.com/
Channel 9 https://channel9.msdn.com/
MVA https://mva.microsoft.com/
https://mva.microsoft.com/en-US/training-courses/github-for-windows-users-16749 https://www.hdtune.com/ https://www.raspberrypi.org/ https://www.atlassian.com/software/jira https://www.atlassian.com/software/bitbucket https://www.pcbway.com/