jRapidRPC is a Java RPC library that allows you to create client-server applications that talk in objects. It is small, fast, and extensible. Its smallness helps you learn how to use the library quickly. jRapidRPC is fast due to its compact size and lack of complexity. Also, it uses the ProtoStuff serializer by default. jRapidRPC's extensibility allows you to can write a new client-server or a new serializer.
District Builder is a software application designed to give the public transparent, accessible, and easy-to-use mapping tools to draw the boundaries of their communities or to generate redistricting plans for their state and localities. The drawing of electoral districts is among the least transparent processes in democratic governance. All too often, redistricting authorities maintain power by obstructing public participation. The resulting districts embody the goals of politicians to the detriment of the representational interests of communities and the public at large. With District Builder, the public has the capacity to create and submit district plans for municipal, county, and state governments, support redistricting competitions, and keep the entire process open. In addition to legislative redistricting, District Builder's flexibility accommodates school districts, police districts, and many other redistricting needs.
Mod_Dosblock is an Apache module written to provide Dos/DDoS protection at the HTTP layer. It works on HTTP URLs or HTTP headers, and can throttle requests based on the incoming URI/header pattern. This module can be particularly useful in an architecture where the content serving Web servers sit behind reverse proxy Apache servers exposed to the Internet. The gateway servers can throttle/DoS protect HTTP queries, saving the actual serving Web servers.
Hades is a high availability (HA) data source. This HA data source contains two other data sources: the main one and the failover one. The HA data source exposes one of them at a time and can automatically switch between them when certain conditions are met. These conditions are highly configurable. By default, when the main data source is overloaded, the failover data source is used. The load of a data base is determined on the basis of the average execution time of some configurable SQL statement that is examined periodically. The HA data source exposes through JMX its state and also operations for manual switching between the two contained data sources in case automatic switching must be suppressed for some reason.
The Hummus PDF Writer library allows you to generate PDF files. It was developed with a principal “one-off” method of generating PDF files. Adhering to this idea, it is both fast and retains a low memory signature regardless of how large the file grows. The library has a set of high level features for adding content to a PDF, including creation of pages; drawing primitives and any of the simple PDF operators for drawing content; embedding of PDF, JPEG, and TIFF images; Unicode text support with Type1, TrueType, and OpenType fonts; and defining reusable objects using XObject Forms. You can also use the library as a PDF parser. The library is very extensible. It is easy to implement more PDF features by using the lower level set of methods, which provide access to the PDF building blocks themselves. Adding a feature requires you to be familiar with the PDF formatting of that feature, but will not require you to write the basic PDF building blocks, as the library handles this.