xtb program performs semiempirical quantummechanical calculations. The underlying effective Hamiltonian is derived from density functional tight binding (DFTB). This implementation of the xTB Hamiltonian is currently compatible with the zeroth, first and second level parametrisation for geometries, frequencies and non-covalent interactions (GFN) as well as with the ionisation potential and electron affinity (IPEA) parametrisation of the GFN1 Hamiltonian. The generalized born (GB) model with solvent accessable surface area (SASA) is also available available in this version. Ground state calculations for the simplified Tamm-Danceoff approximation (sTDA) with the vTB model are currently not implemented.

Ldaptive is a simple, extensible Java API for interacting with LDAP servers. It was designed to provide easy LDAP integration for application developers. Features include:

A high level, "more Pythonic" interface to the PKCS#11 (Cryptoki) standard to support HSM and Smartcard devices in Python.

This PostgreSQL extension implements t-digest, a data structure for on-line accumulation of rank-based statistics such as quantiles and trimmed means. The algorithm is also very friendly to parallel programs.

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This is the GNU C compiler for the i686-linux-gnu architecture, a fairly portable optimizing compiler for C.