Quick post here:
singing games for children! It has a large collection of songs in English, French, Catalan, Spanish and Polish (all songs not in English have English translations). Along with the song, there is a full description of how to play the game and many songs are accompanied by a link to a youtube video or to a score of the music.
Within the categories of languages and collections by the site author, the songs are sorted by MANY themes (Holidays, Seasons, Animals, Day and Night, Farm etc.) There is also a grid that shows what type of game each song has so you can vary your teaching by type of game. It does not sort by melodic elements or rhythmic elements, but I can tell it will be awesome when looking for a certain theme for a program, etc.
Note: You do have to scroll down a bit to get to where you can actually click on the song titles- but there is lots of great information before that that would be great to share with parents, administrators, etc. (Why singing games, how to teach them, etc.)
Be sure to check it out- Love it already!