Some of the more standard booking engines also have gay-friendly microsites to help plan your vacation:
International Gay and Lesbian Travel Association has a database of hundreds of gay-owned and gay-friendly travel businesses, including destinations, tour operators, accommodations, airlines, cruise lines and car rental companies.
Damron guidebooks cater to gay and lesbian travelers, including a guide to 75 cities around the world.
Out Traveler magazine is a national publication catering to gay and lesbian travelers, with destination articles, tips and stories.
Instinct Magazine, a national gay and lesbian publication, now has a gay travel online resource.
Passport Magazine is an LGBT-oriented travel magazine offering destination profiles, travel features and travel news.
Lesbian & Gay Hospitality Exchange International is a network of gay and lesbian hosts and travelers who offer free accommodations to other members. There are more than 500 listings in more than 30 countries.