What are some tools for identifying words that can be made from specific letters?

Wordsmith hosts an Internet Anagram Server, which rearranges letters in one word or series of words to form another word or series of words. There are several other Internet sites that rearrange a random series of letters into as many words and phrases as possible.

Internet Anagram Server, also known as I, Rearrangement Servant, is a popular site for this purpose. Users simply enter letters in the box labelled Find Anagrams For and press the Get Anagrams button. The Word Solver site does the same job. Its focus is on making words for games like Scrabble and Words With Friends.