express-rate-limit
Basic IP rate-limiting middleware for Express. Use to limit repeated requests to public APIs and/or endpoints such as password reset.
express-slow-down
Basic IP rate-limiting middleware for Express that slows down responses rather than blocking the user.
express-xss-sanitizer
Express 4.x middleware which sanitizes user input data (in req.body, req.query, req.headers and req.params) to prevent Cross Site Scripting (XSS) attack.