As ever with these sorts of questions, it kind of depends on your perspective. Franco and the Spanish Civil War are pretty frequently discussed in Spain, for instance. The conflict and dictatorship aren't exactly absent from mainstream popular culture outside of Spain either (from literary classics by Orwell and Hemingway to modern films such as Pan's Labyrinth). Documentaries about the conflict certainly exist, in English and Spanish (and likely many other languages). A quick search of this sub will reveal plenty of questions about the conflict and its aftermath.

If anything, I'd say the Spanish Civil War has a continued resonance outside Spain to an almost unprecedented extent, given that it was a civil war that took place in a country that at the time was barely even a secondary power in Europe. This has to do with the wider ideological context of the conflict - the battle was readily understood as a microcosm of much wider political confrontations taking place in the late 1930s. For those on the left outside Spain, the Spanish Republic represented a beacon of hope for the future of democracy, a sign that militarism, authoritarianism and fascism could be successfully resisted. On the right, it could be seen as a Christian crusade against godless Bolsheviks, a backlash from honourable, traditionalist Spain against the evils of modernity. This in turn led to substantial international involvement, both from states such as Germany, Italy and the USSR, as well as many thousands of people across the world who took part in solidarity movements, or in some cases went to Spain to take up arms directly. This legacy of foreign involvement meant that aside from being a major international crisis of the late 1930s, the conflict was remembered and celebrated by those who had directly or indirectly taken part.

Spain of course was not a combatant (directly) in the Second Word War, and in that sense it's somewhat understandable that Franco never quite ended up in the same category as Hitler and Mussolini. Whether or not he should have, and been deposed by the Allies at the end of the Second World War, is still an open debate, although along political rather than historical lines.