Protect invalid UTF8 characters from the URL and other env vars

Basic Rack middleware for Rails 3 to authorize access to path by IP using YML config file

Simple Rack middleware that blocks manually blacklisted IP's.

White and clacklist IPs

Rack::Joint is a rack middleware to set redirect configuration with your anticipation.

A collection of rack middlewares helping you add JSONP to your app

Rack Middleware for JSON APIs accessed cross-domain from legacy browsers Firefox version 4 does not support response headers for cross-domain requests. This middleware intercepts all requests and if the X-WRAP-RESPONSE is set, the response will be wrappped in JSON like {header: ..., body: ...}

Rack middleware for authentication using JSON Web Tokens using the jwt_claims and json_web_token gems.

Verifies JWT signature, validates claims (expiration, issuer), and handles public key retrieval to ensure requests are securely authenticated by an external SSO provider.

LESS CSS preprocessing for Rack apps.

Rack Based Locale Selector

Remember locale in rack layer

Simple rack based log viewer

A template gem

Rack middleware to log requests in logstash json event format. Like the logstasher gem, but for rack apps.

LTSV logger for Rack applications implemented as middleware

A simple piece of rack middleware to redirect certain URLs when they are navigated to directly. Designed for use with sites where the same site is served across several domain names that each highlight different specialities.

Uses the mail library for sending exceptions

Rack middleware that populates the params variable with the contents of matrix parameters in a URL

Sam Saffron's memory profiler made up as a rack middleware that writes reports to tmp folder