In general, tools made widely available for purchase by any individual or business without restriction, under reasonable conditions are considered commonly available. An indicative non-exhaustive list of tools considered commonly available is provided by the standard EN 45554.
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.