Theory, Equations & Spreadsheets
Airfoil Coordinates Database - UIUC
Australian Soaring Spreadsheet site - Jim Rennie (spreadsheet) & Beverley Matthews (data) - Includes a spreadsheet with polar curves for many, many gliders
Aviation Formulas - by Ed Williams
Dynamic Soaring
Gliding in Melbourne.org - Misc. calculators and software including a program that prints final glide calculators.
Minnesota Soaring Club Glider Info. - Bob Hanson
Polars - User supplied polar data for Glide Navigator II, Pocket-NAV, Palm-NAV, Cambridge L-NAV, 302 and WinPilot - by Paul Remde.
Sailplane Cruising Polar Coefficients and Weight Limits - Collection of polar data for many sailplanes by Carl Herold hosted by WinPilot author Jerry Plaszowiecki
Soaring Files - Spreadsheets, stories, forms, flight logs, etc. - collected by Paul E. Remde
Soaring Papers - John Cochrane - Very interesting papers on MacCready theory and start strategy
Soaring Symposia Archive
Speed-To-Fly Calculator - Bob Hanson