Four of these are well known: the Ethica, the Tractatus Politicus, the Tractatus de Intellectus Emendatione, and the Epistolae (letters by Spinoza to correspondents, expounding aspects of his philosophy).
Tractatus Logico-Philosophicus | Tractatus Politicus | Tractatus de Intellectus Emendatione | Wittgenstein Tractatus | ''Tractatus de Ponderibus et Mensuris'' |