lib4d_sql is a C library that provides the required functions (connect, prepare, execute, etc.) for writing an SQL client for 4D databases. It uses the public 4D SQL protocol, which is supported by 4D products since version 11. It is already used by the PDO_4D Open Source project, and it might be used to provide others drivers for JDBC, ADO, or ActiveRecord.
DJ Swing Suite provides some components and utilities that are often needed or greatly help the creation of rich Swing user interfaces. The components include, among other things, combo buttons, tri-state check boxes, links, extended label (selectable/multi-line) and text/number fields with support for validation, notification tips, formatters, and masks. The utilities bring features like auto-scroll with middle mouse click, automatic fitting of table columns, and conversion of wildcard expressions.
Perl Math::FastGF2 is a Perl math module for performing arithmetic on Galois Fields. Galois Fields have applications in Cryptography (such as the AES encryption system or various threshold systems for sharing secrets) and Error-correcting Codes (eg, Rabin's Information Dispersal Algorithm or Reed-Solomon Codes). It currently implements all the primitive maths operations needed to work with Galois Field polynomials. A set of demo scripts is included that implements Shamir's Secret Sharing algorithm using the module.