It's difficult to find symmetrical case of state summary execution, each execution having its own circumstances, means, and legal case.
Still, if the discussion is about the ruthlessness of Napoleon, it has to be compared to behaviour of other sovereigns of the period, to check whether Napoleon's was "more extreme" than others. And here we will go for a tit for tat debate.
Paralegal execution seems to appear in other countries, with diverse shape :
French royalist found shelter and support in UK, for assassination plots against first consul.
Austria, particularly Archduke Karl and Metternich, are directly implicated in the theft of diplomatic mails and the assassination of French diplomats at Rastatt in 1799
Prussia and Russia were not renown for the way they composed with internal opposition, but there, I don't have specific case - by lack of research.
So no need to "admire" N to refuse to single him out on this subject.