ENotes.com and Academia.edu both offer critical analyses of "The Open Window" by Saki. Glencoe.com also offers a brief analysis with an even briefer summary of the analysis.
ENotes.com offers an analysis that visitors can read online, print or view in a PDF. This analysis covers the historical setting, literary style and social sensitivity. It also includes topic suggestions for reports. Academia.edu provides a more technical analysis formerly published in a scholarly journal. The author dissects the story in chronological order and provides frequent citations and quotes. Glencoe.com's analysis acts as an example and includes notes to illustrate the techniques the author used in the analysis.