If Twitter is the “nervous system of the web” as some people think, then what is the brain that makes sense of all those signals (tweets) from the nervous system? That brain is the Twitter Analytics System

How can we possibly build planet scalable systems to handle this massive growth if building much smaller applications currently stresses architectural best practices past breaking? We can't. We aren't anywhere close to building applications at this scale, except for perhaps Google and a few others, and there's no way you and I can reproduce what they are doing.

RESTClient is a firefox extension use to visit and test RESTful/WebDav services.

Expression Web SuperPreview for Internet Explorer is a stand-alone visual debugging tool that makes it faster and easier to migrate your sites from Internet Explorer 6 to Internet Explorer 7 or 8

An open-source filter software that can detect rampant stupidity in written English. This will be accomplished with weighted Bayesian or similar analysis and some rules-based processing, similar to spam detection engines. The primary challenge inherent in our task is that stupidity is not a binary distinction, but rather a matter of degree. To this end, we're collecting a ranked corpus of stupid text, gleaned from user comments on public websites and ranked on a five-point scale

If you want a long-polling server but don't want to wait on idle connections via upstream proxies or make your applications totally asynchronous, use this module to have nginx accept and hold long-polling client connections. Send responses to those clients by sending an HTTP request to a different location.

This test will check a mail server IP address against 147 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam.

PHP’s function fsockopen lets you open an Internet or Unix domain socket connection for connecting to a resource, and is one of the most powerful functions. fsockopen could be described as creating a direct link to the wire connected to a resource, which means you can send any information (EBCDIC, ASCII, Hex, C arrays, Raw) directly to the target server.

Infinispan is an extremely scalable, highly available data grid platform - 100% open source, and written in Java. The purpose of Infinispan is to expose a data structure that is highly concurrent, designed ground-up to make the most of modern multi-processor/multi-core architectures while at the same time providing distributed cache capabilities. It is also optionally backed by a peer-to-peer network architecture to distribute state efficiently around a data grid.
Offering high availability via making replicas of state across a network as well as optionally persisting state to configurable cache stores, Infinispan offers enterprise features such as efficient eviction algorithms to control memory usage as well as JTA compatibility.

This is a package of tools in use in Skype for replication and failover. It includes a generic queuing mechanism, PgQ and utility library for Python scripts.