Independent Developers

ACM - Air Combat Simulation
Downloadable simulation with information and services.
http://websimulations.com/

Aerofly
A realistic model aircraft flight-simulator for Windows 95 and 98.
http://www.ipacs.de/

AIRLINE - Aviation Business Simulation
Game information, downloads and screenshots.
http://www.airlinesimulation.com

AirStrike
A 2D dogfight game in the tradition of the Intellivision and Amiga games 'Biplanes' and 'BIP'. Includes screenshots, information, and downloads.
http://icculus.org/airstrike/

Arenalogic
Offers news, downloads, and discussion.
http://www.arenalogic.com/

CFSIP Games
Contains flight IP games and design forums.
http://www.cfsipgames.com/phpbb/

Double Delta
Geared towards recreating a classic, but is becoming quite a simulator in the process. Provides information, screenshots and news.
http://doubledelta.org.uk/contents.htm

OpenGC
A open-source tool for developing glass cockpit displays for simulated flightdecks.
http://opengc.sourceforge.net/

SourceForge: Valkyrie Simulation Project
Flight Simulation for vehicles from the Macross Universe (aka Robotech).
http://sourceforge.net/projects/valkyrie/

Valkyrie Simulation Project
Contains news and information.
http://valkyrie.sourceforge.net/

Vertigo Flight Simulator
Public domain flight simulator, information, downloads, and screenshots.
http://www.astro.ku.dk/~norup/vertigo/vertigo.html

VOR Navigation Simulator
An online navigation simulator game (Requires a java enabled browser).
http://www.relia.net/~george/aviation/sim/

YS Flight Simulation
A free and open source flightsim Realism Pack. Offers demos and development files.
http://www.flightsimhq.org/ysflight/