Unfortunately (at least for now); I cannot support IOS due to Apple's policy of only allowing download and installation from the Apple store. This makes distribution and beta testing all
but impossible for a independent developer; I have however heard rumours that in the European Union, there is a legal challenge under competition rules. If this is upheld, my position
will change. Currently, the only way to install other than from the official store is to jailbreak the device. This is not something I advocate as I do not wish to be in any way liable if you
'brick' your device, or there are other unintended consequences. After all, you chose Apple, did you not; you pays your money and you takes your choice, as the saying goes.
Want to help test the app? See below. DFDN.org App: Please note it is a beta version. It will be released later. For now, you will need to grant permission to install apps from an unknown source. Feedback would be most welcome! David
DFDN main APP. Please note it is a beta version. 
DFDN messenger APP. Please note it is a beta version.
DFDN News APP. Please note it is a beta version.
DFDN Radio News & Media Player. Beta version. Has a number of BBC news stations, Burkinabe stations. Media Player.
DFDN teaching support APP. DFDN main APP. Please note it is a beta version.
DFDN VPN APP. Please note it is a beta version.
DFDN AI APP. Please note it is a beta version.
DFDN Gallery - displays your images as wallpaper.
DFDN Keyboard - changes your keyboard to a custom decoration of your choice. (Please specify your choice!).
DFDN Portfolio for Photovoltaic (solar!) power
DFDN Portfolio for Photovoltaic (solar!) power (Version en langue française)
DFDN Africa Manifesto - our business plan and portfolio.
DFDN Scheduler APP. This is for students and organisation members to see my availability in real time. Please note that you can only see public holidays and times of availability; other details are confidential. READ ONLY to prevent malicious usage.
Review of the AOR AR-DV1 communications as an app. First publiched 24/12/2015.
General IELTS app for Android
IELTS Speaking test preparation app for Android
IELTS Reading test preparation app for Android
IELTS Writing test preparation app for Android
Zello Desktop for Windows (For DFDN family and business radio network)
Zello Desktop for Macintosh (For DFDN family and business radio network)
Zello Despatch for Android (For DFDN family and business radio network)
Zello Despatch for Apple devices (For DFDN family and business radio network) only available on the apple app store sorry.
Alibaba - for obtaining supplies for the business. Very useful for components!!!
Filezilla FTP/SFTP client for Windows - an excellent FTP client for uploading/downloading files to/from servers including mine. And even better - its free!!
Filezilla FTP/SFTP server for Windows - the good news: its an excellent FTP server for Windows, and even better - its free! The bad news - you don't want to be hosting on Windows!!!!
*** Why educated people do not pay hard earned $$$$$$$$$$$$$$$$$$$$$$$ for Microsoft products.... Would you buy a car that performed like this??? ***
For ebook creation: Amazon Kindle and Kindle app, kpr files, use Kindle Create; for .EPUB use Sigil); available for Micro$oft and Macinto$h, not Linux (why???).
Amazon Kindle Create (for .kpr files, Macintosh version)
Amazon Kindle Create (for .kpr files, Windows version)
Sigil (For .epub files, Macintosh Version)
Sigil (For .epub files, WIndows Version)
Calibre eBook software - to organise, store and read eBooks - also very useful for format conversion - it actually works! (Windows version)
Calibre eBook software - to organise, store and read eBooks - also very useful for format conversion - it actually works! (Macintosh version)
Calibre eBook software - to organise, store and read eBooks - also very useful for format conversion - it actually works! (Portable version)
Kindle for PC - to view .kpf files on your PC.
The best (in my opinion!), Alleycode is a free and easy to use HTML editor for Windows; (you really don't want to be running Windows you know...)
An easy and free Gopher browser for Micro$oft OS
Lagrange is a nice simple browser for Gopher protocol as well as the new gemini protocol (which has potential and I will eveluate as soon as I find a suitable server).
Lagrange for Android - Beta
Lagrange for Macintosh - for X86 architecture
Lagrange for Macintosh - for ARM64 architecture
I am NOT a Macintosh expert; I have not used this OS myself, so please see your system documentation for details of your system architecture. Requests to support systems I do not currently run are, sadly, not likely to be well received as I am a busy man... One piece of good news however - I am waiting to see if new EU legislation requiring IOS devices to permit alternative app stores in the EU may make beta testing on IOS feasible. I will report back later.
F Droid repository downloader
NFS Client for Windows. For NFS Server.
For a free AutoCAD alternative, I have made FreeCAD available for Windows, Macintosh and Linux.
FreeCAD for Linux
FreeCAD for Macintosh
FreeCAD for Windows (64 bit)
A real job interview online - Auguest 2023
Introduction video for China (in particular) - a job please?!
FYI: Gopher is an old protocol which does not support transport later security (TLS) and is therefore unsuitable for taking payments, for example, but is lightweight and VERY economical on bandwidth, whereas Gemini has also the advantage of having transport layer security as an intergral part of its specification. Its worth noting that both are free of the scourge of user tracking, cookies, pop up ads and autoplaying videos, all the other rubbish we have come to accept as normal just as we have Microsoft Windows crashing every second day at best. Very useful in African countries where many still pay for bandwidth by the megabyte on slow connections. Gopher uses port 70 and Gemini port 1965 in case of firewall issues by default.
MSc Dissertation. Download (Adobe PDF)
MSc Dissertation. Download (Microsoft Reader)
The following ebook was written to educate the home user about online security issues. It was completed prior to my commencing my dissertation. Although it dates back to 2002 (hence the use of Windows 2000), it is fair to say that the issues are just as relevant today as they were in 2002! It does predate the introduction of smartphones and the era of "Bring your own device" policies.
The 'Partygate' report. These are the same social misfits who concocted the likes of the CMS.
Safe and Secure Home Computing (Adobe PDF)
Homebrewing (Adobe PDF)
Homebrewing (Microsoft Reader)
English Vocabulary in Use (Pre-Intermediate - Intermediate)
English Vocabulary in USe (Advanced)
Safe and Secure Home Computing (XPS Document)
Network security scanning - known as friendly probing (PDF Document)
Network security scanning - known as friendly probing (PDF Document)
Friendly probing output (DFDN users only)
The following download is a real life transcript of a chat on Google Hangouts. It begs the question: If this lady was being dishonest about where she lived, then what else might she be up to?!
Romance Fraud: How I caught one lady trying to lead me astray. Read this if you care about the contents of your bank account! A must read. 
Viewing the total eclipse of the sun, August 11th, 1999. A Legacy article written by me shortly after the event in my mid 20s, before I had any grey hairs. Origionally written on a Windows 3.1 system. Those were the days.
As a PDF file.
As an XPS Document - suitable for newer Windows platforms, some e-readers and smartphone apps. A newer publishing format.
Home Brewing is another of my passtimes. This was written some ten years ago and published on my origional website. Still of interest today though.
As a PDF file.
As a Microsoft Reader ebook.
Laws of chess - care to challenge?
Putty Is a simple but excellent client for Telnet, Secure Shell (SSH) and Remote Login (rlogin) for Microsoft systems.-
Client for secure FTP (encrypts traffic unlike standard FTP, as well as your login credentials).
Secure copy for Windows systems.
Postscript/Encapsulated Postscript (.ps .eps) Viewer for Windows.
Android Studio For Windows
Android Studio For Debian and related OS
Android Studio For Unix/Linux
Android Studio For Macintosh
Android Studio For Macintosh - older version
Android Studio For Macintosh - ARM Processor
RTSP player for Windows
RTSP player for Linux (DEB)
RTSP player for Linux (RPM)
RTSP player for Macintosh
English Spelling and Grammar (For IELTS preparation).
Cura 3D Printing software (Macintosh).
Cura 3D Printing software (Windows).
Cura 3D Printing software (Linix, older system).
Cura 3D Printing software (Linux, modern system).
F-Droid app - for downloading apps from the beta store. (You may need to change a setting to install apps from this source, as for DFDN.)
Fingerlist - Android app lists your contects who run a finger service- an old service but useful if used with care. Why not finger me (finger [email protected]) or add me on fingerlist to see what I am up to?
Symbolab Laplace Transform solver for us engineers. For Android only.
Gravity - free, open source client for usenet. For Windows. I am launching an experimental usenet service. More clients for follow.
SABnzbd - free, open source client for usenet. For Windows. I am launching an experimental usenet service. More clients for follow.
SABnzbd - free, open source client for usenet. For Macintosh. I am launching an experimental usenet service. More clients for follow.
SABnzbd - free, open source client for usenet. For Unix/Linux from repositories. I am launching an experimental usenet service. More clients for follow.
NewsTap Lite - best choice for IOS devices....
NewsTap Lite - best choice for Android devices....
NewsTap Lite - Download APK for Android devices....
WeChat for Windows setup (for communication to/from and within China
WeChat for Android APK (for communication to/from and within China; for Android see your own store)
Newsgroup reader - not the most imaginitively named, but certainly the most functional reader for Android. Oh, and its free too.
International ISO 4217 currency codes (PDF)
ZeroNet Client for MACOS
ZeroNet client for Linux (64 bit)
ZeroNEt client for Windows (64 bit)
ZeroNet client for Android (APK, beta version)
WinSCP (Secure copy for Windows), for transfering files to/from Unix from Windows
China Mobile balance and topup app '10086' - not for China Mobile or China Unicom
Baidu - major APP store for China. A must have if you work in China.
Metroman - a mapping app for China
Didi is a Chinese ride hailing app. Use it to get a taxi in China.
Baidu Maps is the number 1 map application in China. Problem for us? It's in Chinese!
12366纳税服务 Is a Chinese tax app. You use it to prove you paid tax before you can convert or transfer CNY to foreign currencies.
MANY other clients for MacOS, Linux, Android and others:
A quick glance through the “User-Agent” headers of articles posted into GRC's newsgroups reveals a wide range of Usenet Newsreading clients:
User-Agent: Claws Mail 3.17.3 (GTK+ 2.24.32; arm-unknown-linux-gnueabihf)
User-Agent: ForteAgent/8.00.32.1272
User-Agent: Forte Free Agent 3.3/32.846
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)
User-Agent: Groundhog Newsreader for Android
User-Agent: KNode/4.8.5
User-Agent: MicroPlanet-Gravity/3.0.4
User-Agent: MicroPlanet-Gravity/3.0.8 (GRC)
User-Agent: Microsoft Outlook Express 6.00.2900.5931
User-Agent: Mozilla/5.0 (Gecko/20100101 Thunderbird/68.4.2
User-Agent: Mozilla/5.0 (Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.5
User-Agent: Mozilla/5.0 (Gecko/20100101 Goanna/20170215 FossaMail/38.0.0
User-Agent: ncat/6.47
User-Agent: NewsTap/5.4.1 (iPad)
User-Agent: Pan/0.144 (Time is the enemy; 28ab3ba git.gnome.org/pan2)
User-Agent: PhoNews/3.1.1 (Android/10)
User-Agent: slrn/1.0.3 (Darwin)
User-Agent: Unison/2.2 (for MacOS)
User-Agent: WinVN 0.99.18.0 (x86 64bit)
User-Agent: Xnews/2006.08.24
User-Agent: Xnews/2009.05.01 Mime-proxy/2.3.c.1 (Win32)
User-Agent: Xnews/5.04.25
So, whatever your favorite platform, it is very likely you'll be able to find a newsreader to allow you to comfortably participate in the new Usenet test which may become a new feature of DFDN. For the techies amoung you, the server is INN2 for Unix. If successful this may become a regular feature. No password is required at present. This policy may be revised in the future.
