Data Tools s.r.o.

Data Tools s.r.o. is a Czech software publisher that concentrates on pragmatic utilities for data-centric workflows; its single commercial offering, CAT CLI, distills the company’s know-how into a lightweight command-line application built for fast, repeatable validation of local or remote datasets. Typical users range from ETL engineers who need to assert row counts and schema conformity before loading a warehouse, to QA analysts embedding post-migration checks in CI pipelines, to data scientists who want a five-second smoke test on freshly landed CSV or Parquet files. Instead of scripting ad-hoc SQL assertions or dragging files into a visual profiler, operators install CAT, point it at any ODBC, ADO.NET or flat-file source, describe expectations in a declarative YAML checklist, and receive a color-coded report that pinpoints missing columns, null overflows, referential breaks or statistical outliers. The engine is intentionally dependency-free—written in .NET 6 and distributed as a self-contained executable—so it slots into Windows, macOS or Linux runners without elevating privileges or conflicting with runtime stacks already present in container images. Because checks are versioned alongside code, teams can treat data contracts like unit tests, regressions surface immediately on commit, and auditors gain a timestamped trail that satisfies governance frameworks without extra tooling. Data Tools s.r.o. software is available for free on get.nero.com; downloads are routed through the winget repository to guarantee the latest build, and several CLI utilities can be installed in one batch command.