Microsoft have stopped producing Flight Simulator, but FSX DVDs may still be found at some outlets.
The MSFS code has been enhanced by Dovetail Games for their FSX Steam edition,
and further developed by Lockheed Martin for Prepar3D.

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FSX and P3D
FSX-Steam Edition Developed by Dovetail Games for the Steam distribution platform, Microsoft Flight Simulator X Steam Edition (FSX-SE) offers improved multiplayer options and updated Windows 10 support, while retaining full backward compatibility. FSX Steam Edition
Prepar3D
(P3D)
P3D is a new flight/sea/land sim by Lockheed Martin. Extends development of Microsoft FSX platform with improvements, greater stability and new functions, while maintaining compatibility. Prepar3D v4 (64 bit) has been released.
Prepar3D
Forums
Official Lockheed Martin P3D support and discussion forums. They include specific forums for discussing issues with installation, normal and multiplayer use, hardware, SimConnect, screenshots. Prepar3d Forums
 Prepar3D Learning Centre & SDK Access the official Prepar3D Learning Center and SDK here. Learning Center offers users helpful information on aircraft, controls, navigations, missions, views etc. SDK sets out parameters for developers and describes use of built-in utilities and plug-ins. Prepar3d SDK
Popular FS News Sites
AirDailyX
(ADX)
Popular flight sim blog by D'André Newman. Latest daily news, reviews, comics, interviews and other related material on PC flight simulation from developers and publishers around the world. Plenty of comments and screenshots. Also on Facebook.
 Calypte Aviation From Poland, a nice blog by Wojciech Przybylski with news, tips, tutorials & videos and illustrated reviews of aircraft and scenery. Includes some articles on real-world aviation. A sister-site in English (C-Aviation.net) focuses on reviews, tutorials & tweaking. Calypte Aviation
 Flusinews.de German language on-line flightsim magazine largely staffed by a group of young volunteers. They carry news, reviews of freeware and payware, articles and videos. Also forum and links. Flusinews.de
FSElite New, reviews and editorials. Delivering ‘news-worthy’ articles, free from unfounded rumour or speculation. If we report something, we’ll source it, or provide some proof to ensure that what we’re saying is right. FSElite
PCFlight.net PCFlight is an independent flight simulation news and reviews website. Founded in late 2014 we are a trusted resource for FS pilots across the world. Also on Facebook. PC Flight.net
SimFlight English portal of a large network of useful international sites (France, Spain, Russia, Germany, Poland, Japan etc. each in their own language). Has up-to-date FS news, reviews, a large number of general and product forums, links and an on-line shop. SimFlight
Popular FS Download Sites
Avsim A huge and popular flight sim portal with thousands of downloads for current and earlier versions of MSFS and other flight sims. News, reviews and many active forums. Totally free. Donations welcome.
FlightSim.
Com
The original. A huge flight simulator archive with well over 100,000 files covering all versions of MSFS and P3D. Free, fast downloads, latest news, reviews & active forums. Subscription option gives assured entry and even faster downloads. Recommended.
Fly Away Simulation Flight simulation news and reviews, downloads, forums, FAQs, navigation tutorials, screenshots and links. Completely free FSX, FS9 and X-Plane download libraries and active forums. An optional monthly or yearly subscription gives faster downloads.
FS Freeware.
net
Freeware aircraft, scenery and tools downloads for FS2004 and FSX and Flight Gear.
Rikoooo A collection of freeware downloads for FS9, FSX and P3D. Includes aircraft, scenery and utilities. Also screenshots and videos. Optional, low cost, paid subscription gives much faster downloads. French and English language. Rikoooo
Simviation Many gigabytes of quality freeware add-ons nicely organised by type. Includes aircraft, panels, scenery & utilities. Also offers help with installing them, news, reviews, VA message board and more.
SurClaro Flight Simulations Large, long established flight simming resource offering thousands of freeware and shareware downloads (free registration required), forums, chat rooms and screenshots. Also hosts an on-line shop.
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