"Protostuff is the stuff that leverages google's protobuf.
A serialization library with built-in support for forward-backward compatibility (schema evolution) and validation.
available formats:
protostuff (native)
graph (protostuff with support for cyclic references. See SerializingObjectGraphs)
protobuf
json
smile (binary json useable from the protostuff-json module)
xml
yaml (ser only)
kvp (binary uwsgi header)
support for messages that are generated by the protostuff-compiler (java_bean)
cyclic references via graph format
see CompilerOptions for more customized compilation of .proto files
support for existing pojos (See runtime schemas)
cyclic references via graph format
polymorphic (a nested message can be an interface/abstract class or even java.lang.Object)
support for existing protoc-generated java messages
see the io instructions for json, xml, yaml)
no support for cyclic references (limitation of the builder pattern)
Interoperability across various mobile platforms
android
kindle
j2me (protostuff-me module)
Transcoding support
converts one encoding to another. See PipeUsage.
Source and Sink
protostuff, protobuf, json, json-numeric, smile, smile-numeric, xml
Sink only
yaml
"
"Polipo is a small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server). While Polipo was designed to be used by one person or a small group of people, there is nothing that prevents it from being used by a larger group.
Polipo has some features that are, as far as I know, unique among currently available proxies:
Polipo will use HTTP/1.1 pipelining if it believes that the remote server supports it, whether the incoming requests are pipelined or come in simultaneously on multiple connections (this is more than the simple usage of persistent connections, which is done by e.g. Squid);
Polipo will cache the initial segment of an instance if the download has been interrupted, and, if necessary, complete it later using Range requests;
Polipo will upgrade client requests to HTTP/1.1 even if they come in as HTTP/1.0, and up- or downgrade server replies to the client's capabilities (this may involve conversion to or from the HTTP/1.1 chunked encoding);
Polipo has complete support for IPv6 (except for scoped (link-local) addresses).
Polipo can optionally use a technique known as Poor Man's Multiplexing to reduce latency even further.
In short, Polipo uses a plethora of techniques to make web browsing (seem) faster."