CeroWrt is a project built on the OpenWrt firmware to resolve the endemic problems of bufferbloat in home networking today, and to push forward the state of the art of edge networks and routers. Projects include proper IPv6 support, tighter integration with DNSSEC, and most importantly, reducing bufferbloat in both the wired and wireless components of the stack.

via Cerowrt – Overview – Bufferbloat.

From their wiki page on buffer bloat:

Bufferbloat is a huge drag on Internet performance created, ironically, by previous attempts to make it work better. The one-sentence summary is “Bloated buffers lead to network-crippling latency spikes.”

The bad news is that bufferbloat is everywhere, in more devices and programs than you can shake a stick at. The good news is, bufferbloat is relatively easy to fix. The even better news is that fixing it may solve a lot of the service problems now addressed by bandwidth caps and metering, making the Internet faster and less expensive for both consumers and providers.

How To Build an Open Source Wi-Fi HotSpot with DD-WRT

If you’ve ever tried to set up a Wi-Fi HotSpot, you may have already discovered that you need more than a broadband Internet connection and wireless router or access point. Off-the-shelf routers and APs don’t provide the “captive portal” function needed to either authenticate users or just let them know who to thank for their free connection. Nor do they usually provide other features such as billing support, bandwidth limiting and user isolation. To obtain hotspot-specific features and capabilities, you must use a device commonly referred to as a hotspot gateway.

via How To Build an Open Source Wi-Fi HotSpot with DD-WRT – SmallNetBuilder.

Captive Portal – DD-WRT

List of Chillispot Service Providers (CSPs)

A hosted Chillispot portal can be used to speed-up HotSpot setup and Management, and ease payment and other back-end requirements. Only a DD-WRT Device is necessary, the rest is done by third parties listed below.
Disclaimer: NONE of the following links are endorsements. You are Entirely Responsible Solely for your Choices.

Captive Portal – DD-WRT Wiki.

Transparent web proxy – DD-WRT Wiki

Running a transparent proxy server on your network can be used for more advanced content filtering of web pages for environments such as a school or library (where in some locales, filtering is required by law) or as a way to protect children in the household.

This guide will help you enable a transparent proxy server on your network by having your WRT54G router forward all traffic to the proxy server automatically.

via Transparent web proxy – DD-WRT Wiki.