Pathfinder 1st Edition has been out for over 10 years so now is a great time to see what generators have been built to support it.
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Dungeons, Traps and Encounters
Donjon can also give complex encounter options.
Magic Items and Treasure
Archives of Nethy has a nifty treasure generarator based on tables from core rules and Ultimate Equipment. It includes options by settlement, encounter, gp value, item type or Kingmaker kingdom. Then donjon has For magic items you have have separate magic items or a magic shop. .
Every game needs NPCs but creating full stats in Pathfinder 1E can be tedious. Luckily Dingle's Games gives a template based NPC generator and donjon has a more concise NPC generator with filters for race and class.
The Unofficial Pathfinder Character Generator is a spreadsheet based generator which gives the whole stat block. Finally FindFamiliar is a paid option (create first few for free to try it out) using a non-templated approach to give detailed NPCs.
Characters and Names
If you want a character then get a random one with the Pathfinder Random Character Generator
For names look at Fantasy Name Generator's many pathfinder options.
The Archives of Nethys have a background genearor making use of Ultimate Campaign and Quests and Campaigns.
The World of Golarion
In 1e the World of Golarion has been thrust into the limelight and several generators exist to support it.
For character names with a Golarion flavour dungeonetics has them by race and ethnicities
And for a more in depth look at the world Paizo has a free Inner Sea World Guide pdf.
For something more unusual try the Vault of Wonders: Artifacts of Randomness
For another setting try the Free Port Companion pdf from Green Ronin at drivethrurpg.
Bits and Pieces
Lastly there are a ton of free resources in the Pathfinder Chronicler Anthologies by Paizo Fans United at Paizo.
I'll keep this guide updated so please suggest Pathfinder 1E generators in the comments or on twitter to @DuncanThom