Useful Links

Introduction

There are a couple of interesting child pages, so don't forget to check them out, via the site menu.

Maths

Free Printable Graph Paper - includes a virtual version as well

Sounds

Noisli - Improve Focus and Boost Productivity with Background Noise - does what it says and very well too
Hipstersound | Ambient noise generator to create a positive work environment - an alternative

Untested Software

This is software I am aware of and that should be good but I have not used:

Web Browsers

How do browsers work (2012) - http://blog.mozilla.org/webdev/2012/05/04/how-browser-engines-work/
What do the different browsers support - Can I use... Support tables for HTML5, CSS3, etc
Handy testing site from Microsoft - Interoperability, Browser & Cross-Platform Testing : Microsoft Edge Dev
See how you are tracked - Lightbeam for Firefox — Mozilla

Software

Notepad++ - http://notepad-plus-plus.org/
Handy Directory Sizing - WinDirStat - Windows Directory Statistics
The Linux version of WinDirStat is called "kdirstat" and should be available via your package manager
PE Studio - winitor for Malware Analysis

Support

Handy support details - Support Details | Tech Support Management

Web Site Icons

Icons for iOS and Android - http://www.zen.co.uk/blog/setting-a-home-screen-icon-for-your-website-on-ios-and-android-devices/
More Detail re iOS - http://mathiasbynens.be/notes/touch-icons

Network Tools

Website link, IP and redirect info - Domain Name Data - host.io
What is my IP Address - http://whatismyipaddress.com/
What is my IP - http://www.whatismyip.com/ (preferred)
Working out Subnets and Masks like 10.48.0.0/23 - http://www.subnet-calculator.com/
DomainTools has an excellent WhoIs service - http://www.domaintools.com/research/
Comprehensive tools - http://network-tools.com/
IP Address - http://ipaddress.org/
Mail Testing - http://mxtoolbox.com/
SpeedTest.net - http://www.speedtest.net/
BT Speed Test - http://speedtest.btwholesale.com/ complete with some good advice for testing
NetFlix Speed Test - Internet Speed Test | Fast.com

Domains

ICANN WHOIS - WHOIS Search | ICANN WHOIS

Geo Location

IP Address Labs - http://www.ipaddresslabs.com/IPGeolocationServiceDemo.do
IP Address to Location - http://www.ip2location.com/demo

Internet Access

SamKnows - Broadband Availability Checker

Dates and Times

Time zone conversion - timeanddate.com
Convert to/from milliseconds - Current Millis ‐ Milliseconds since Unix Epoch

Useful Articles

Window Logon Issue Diagnosis - http://greigmitchell.co.uk/the-case-of-the-delayed-logon-screen/ is a useful article on using SysInternals Process Monitor to diagnose logon issues.
Making a Wi-Fi Hotspot - How to turn your Windows laptop into a WiFI Hot Spot | Dell UK more easily done with your phone

Software Development

Windows 8 Phone App Development - http://channel9.msdn.com/Series/Building-Apps-for-Windows-Phone-8-Jump-Start
Storing Passwords - Serious Security: How to store your users’ passwords safely | Naked Security

Stress or Load Testing

Intel Processor Diagnostics Tool - http://www.intel.com/support/utilitytools.htm
Older SysInternals tools - http://blogs.msdn.com/b/vijaysk/archive/2012/10/27/tools-to-simulate-cpu-memory-disk-load.aspx, I recommend using the -c parameter with testlimit, the memory tool, -c with a suitable number stops it grabbing all the memory which can render your machine unusable!
See also Consume in the Windows Server 2003 Resource Kit

Web Site Testing

Sitespeed.io - Welcome to the wonderful world of Web Performance
WebPagetest - Website Performance and Optimization Test

Windows 10

Download for Installing - Windows 10

Windows 7

Wireless Networking - http://technet.microsoft.com/en-us/magazine/ff847520.aspx

English Language

The Apostrophe - http://oxforddictionaries.com/words/apostrophe

Shell Scripts

Bash Guide - http://mywiki.wooledge.org/BashGuide/Practices
Portable Shell Scripts - http://www.in-ulm.de/~mascheck/various/portability/
Making Bash Scripts Portable - http://wiki.bash-hackers.org/scripting/nonportable

Software Analysis

PEStudio, used in anti-malware - winitor

Passwords

Security Tools

Security Tools Top 10 (2013) - ToolsWatch.org – The Hackers Arsenal Tools » 2013 Top Security Tools as Voted by ToolsWatch.org Readers
MD5 File - HTML5 File Hash Online Calculator - MD5, SHA1, SHA2 (SHA-256), SHA-384, SHA-512
Security Planner - gives some good security advice

SSL

SSL Labs - Qualys SSL Labs - Projects / SSL Server Test
Symantec - SSL Toolbox
Hardeniuze, site testing - Hardenize: Comprehensive web site configuration test

Hardware

CPU (Processor) Benchmarks - PassMark Software - CPU Benchmark Charts
SMART Hard Drive Status Utility - smartmontools
Using smartmontools blog page - Mike's Technology and Finance Blog: How To Detect a Failing Hard Drive

Phonetic Alphabet

NATO phonetic alphabet - Wikipedia, the free encyclopedia

UK Motoring

Google

Google Location history

AppData files

Linux uses AppData files to show application information.
Chapter 2. Upstream Metadata
AppData Specification

Unicode

Dark corners of Unicode / fuzzy notepad

AS2

This is a file transfer format, however OpenAS2 Server Application is a useful open source product.

Disk Utilities

Linux based partition utility - GParted -- A free application for graphically managing disk device partitions, not use myself
Commercial disk/partition utility - Disk Management Software - Acronis Disk Director 12 which I heartily recommend

HTML 5

<input> - HTML | MDN - be sure to use the correct or best type
HTML Standard - the definitive spec on HTML 5
HTML5test - How well does your browser support HTML5? - test your browser

Linux

Relax-and-Recover - Linux Disaster Recovery - stumbled upon this, never used but looks interesting

Travel

Network West Midlands - Tram or National Express Midland Metro - Birmingham Trams
Stagecoach Supertram: home - Sheffield Trams
Every Journey Matters - Transport for London - TfL
Raildar - Historic train arrival times
OpenTrainTimes

Qt

How to start with Qt? | nidomiro - a good introduction
C++ Qt Programming - YouTube - some introduction videos

General

Alexa Top 500 Global Sites - most popular websites
Have I been pwned? Check if your email has been compromised in a data breach - "haveibeenpwned" is run by Troy Hunt, security researcher, so can be trusted
General Data Protection Regulation (GDPR) – Final text neatly arranged - for the full GDPR documentation

Sightseeing Ideas

Tower Bridge | London’s Famous Bridges | London Landmarks

Personal Security/Safety

Stay safe in London | The Met
Theft tactics: Be Aware of thieves' tactics | British Transport Police

Mapping

History

Rail Map online - historical rail maps

Gaming

Godot Engine - Free and open source 2D and 3D game engine

Remote Working

Home | mRemoteNG - colleagues have used this, looks worth trying
Remote Desktop Manager - Remote connection and password management software - installed on client's machines, commercial product, possibly worth a look

Sheffield

Picture Sheffield - Images of Sheffield from the council archive
Northern Powergrid | Power Cuts - check if you have an electrical power cut in Sheffield, Yorkshire or the North East

Health

BMI healthy weight calculator - Health tools - NHS Choices

Speaking

Julian Treasure: How to speak so that people want to listen | TED Talk

Audio Visual

Quod Libet is written in Python and uses a Python library for manipulating audio file metadata, specifically the tags, see Overview — mutagen for details.

Communication

Discord - Free Voice and Text Chat for Gamers - for gamers to replace Skype or TeamSpeak but can be used generally
Video Meetings, Video Conferencing, and Screen Sharing - Whereby (formally appear.in) - meeting focused, supports screen sharing, either with a Chrome extension, or it just works in Firefox
Zoom - supports conferences
Firefox Send - for file sharing
Jitsi Meet - secure and free video conferencing

System Integration

The following sites might be useful for solutions you are building:

Coronavirus

Specifically COVID-19