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Geo::WebService::Elevation::USGS executes elevation queries against the United States Geological Survey's web server. You provide the latitude and longitude in degrees, with south latitude and west longitude being negative. The return is typically a hash containing the data you want. Query errors are exceptions by default, though the object can be configured to signal an error by an undef response, with the error retrievable from the 'error' attribute.

SIMLIB/C++ is the SIMulation LIBrary for C++ programming language. You can create models directly in C++ language with the use of predefined simulation tools from the library. SIMLIB allows object-oriented description of models based on simulation abstractions. Current version allows a description of continuous, discrete, combined, 2D/3D vector, and fuzzy models. SIMLIB/C++ is developed at the Department of Computer Science and Engineering, Faculty of Electrical Engineering and Computer Science, Brno University of Technology since 1991.

Veusz is a GUI scientific plotting and graphing package. It is designed to produce publication-ready Postscript or PDF output. SVG, EMF and bitmap formats export are also supported. The program runs under Unix/Linux, Windows or Mac OS X, and binaries are provided. Data can be read from text, CSV or FITS files, and data can be manipulated or examined from within the application.

Fwipe is a secure file erasing program. fwipe0, which actually erases your files, is immune to filenames containing spaces, carriage returns, dashes, or any other special characters. You can use it in place of rm in cron jobs, together with "find ... -print0". The output of fwipe0 is specially designed to be parsed easily by machine, so it can be embedded in other applications which need secure file erasure.

hlfl stands for "High Level Firewall Language". It permits writing firewalling rules using a high level language, and transforms them into rules for real software, like ipfilter, ipchains or cisco rules. You could make contact with the developers by subscribing to <hlfl@hlfl.org>. There is also an announce ML at <hlfl-announce@hlfl.org>. These lists are managed by majordomo (write to <majordomo@hlfl.org> with "help" in the body of your mail).

Cipher-aes128 is an implementation of AES and common modes of operation. It borrows Hanquez's C AES code (see 'cipher-aes') but is unique due to including compile-time detection of NI compiler support, a slightly more functional interface for GCM operations, exposure of 'Ptr' based operations via the .Internal module, and build-in crypto-api support. Cipher-aes128 was originally developed as "'cipher-aes' plus trampolines", which has since been adopted into cipher-aes.

Crypt::LE provides the functionality necessary to use Let's Encrypt API and generate free SSL certificates for your domains. It can also be used to generate RSA keys and Certificate Signing Requests or to revoke previously issued certificates. Crypt::LE is shipped with a self-sufficient client for obtaining SSL certificates - le.pl. The client supports 'http' and 'dns' domain verification out of the box.

mac-robber is a Forensics & Incident Response tool used to collect the Modified, Access, and Change (MAC) times from allocated files. It recursively reads MAC times of files and directories and prints them in 'time machine' format to STDOUT. This format is the same that the mactime tool from The Coroners Toolkit (TCT) reads. mac-robber is based on the grave-robber tool from The Coroners Toolkit (TCT) when using the '-m' flag, except it does not require Perl!

NaCl (pronounced "salt") is a new easy-to-use high-speed software library for network communication, encryption, decryption, signatures, etc. NaCl's goal is to provide all of the core operations needed to build higher-level cryptographic tools. Of course, other libraries already exist for these core operations. NaCl advances the state of the art by improving security, by improving usability, and by improving speed.

OpenSC provides a set of libraries and utilities to access smart cards. Its main focus is on cards that support cryptographic operations, and facilitate their use in security applications such as mail encryption, authentication, and digital signature. OpenSC implements the PKCS#11 API so applications supporting this API such as Mozilla Firefox and Thunderbird can use it. OpenSC implements the PKCS#15 standard and aims to be compatible with every software that does so, too.