Rsyncrypto allows you to encrypt a file or a directory structure such that they can later be synchronized to another machine using rsync. This means that local changes to the plain text file result in local changes to the cipher text file. rsyncrypto compresses the plain text file prior to encrypting it with gzip using the "rsyncable" patch, which is available from the rsync sources.
SkFind is a set of portable and scriptable tools that help developers build software for both publishers and end users such as search engines. It provides a simple data layout that is used to build more complex layouts. The low-level, extensible tools allow read-only access to files, Oracle databases, or other data sources. There are also high-level tools to handle word lookups, case and/or accent simplifications, full-text searches with boolean operators and exact expressions, document highlighting, file-system compression, and more.
SkProd provides a way of building binary data for applications. SkProd has been historically developed for publishing tools. However, it can potentially be used for any application that needs some data to be compiled. The SkProd language emphasizes data flows. Instead of using imperative commands like if/for/while, a SkProd program describes how to produce data streams, and what operations (filters) should be applied on those data streams. Therefore, a typical SkProd program is not a sequence of functions, but rather is a tree whose roots are the input data streams, and whose leaves are the output data streams.
HAVP (HTTP Anti Virus Proxy) is a proxy which scans downloads for viruses with several scanners (ClamAV, F-Prot, Kaspersky, NOD32, Sophos) at the same time. The main aims are continuous, non-blocking downloads and smooth scanning of dynamic and password protected HTTP traffic. It can be used with squid or standalone, and it also supports transparent proxy mode.
GNU Proxyknife (formerly known as phc or proxy hunter customed) is a program to validate free proxies for LAN users to reach the Internet by bypassing ISP proxies with strict limits. It can be customized to change headers (such as User_Agent) in test requests sent to free proxies. You can also customize it with your own checksite, checksite port, or checksite key, switch between the CONNECT and GET method, etc., to test and filter free proxies. It can be used to validate free socks5 proxies with a connect command, socks4 proxies with a connect command or free HTTP proxies with a GET or CONNECT method. It can validate free proxies with a TCP tunnel.