This is a web application to estimate the number of Chinese words you know. The interface has the look and feel of a typical flashcard program, where you simply mark off each word as known or unknown. At the end of the trials, you can see your results summarized, with an estimate of the total number of words you know, and the full list of the words you were asked.
This is another application, which take some Chinese text as input, and creates a table of unique words
Chinese Word Extractor is a program to split any Chinese text into individual words, summarizing information about each unique word. The information is presented in the form of a tab-delimited matrix, so that the results can be easily copied and pasted into a spreadsheet program like Excel.