COAS software systems is a German publisher specializing in lightweight, developer-centric utilities that streamline Oracle database work and conceptual data modeling. Its portfolio centers on two complementary tools: Donkey for Oracle, a no-install, command-line driven client that lets DBAs and PL/SQL developers browse schemas, run ad-hoc queries, extract DDL, compare objects, and automate deployment scripts without the overhead of traditional IDE suites; and Semanta Modeler, a free, graph-oriented modeler that supports semantic notation standards such as ORM, FCO-IM, and Barker-Ellis to help analysts capture business rules, validate constraints, and generate clean relational or NoSQL scripts. Typical use cases range from quick schema audits on production servers and rapid prototyping of data warehouses to teaching conceptual modeling in academic courses and creating portable documentation that stays in sync with evolving databases. Both applications are designed to launch instantly from a USB stick, integrate with shell or CI pipelines, and impose minimal memory footprints, making them favored by consultants who need reliable, vendor-neutral tooling on locked-down client sites. COAS software systems’ software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest versions and permitting batch installation of multiple applications.