Official SRD
Level Up: Adventurer's Guide Level Up: Dungeon Delver's Guide Level Up: Gate Pass Gazette Issue #0 Level Up: Gate Pass Gazette Issue #1 Level Up: Gate Pass Gazette Issue #2 Level Up: Gate Pass Gazette Issue #3 Level Up: Trials and Treasures

Third party content

Ace's Adventuring Guide to Necromancy Agent of the Magus Arcane Sniper Confidence Mage Extra Credit and Deeper Mysteries Field Engineer Fiery Justice Hakan's Pamphlet to Arcane Weaponry Heroes Old and New Level Up: Adventures in ZEITGEIST Level Up: To Save a Kingdom Manual of Adventurous Resources: Complete Mortalist Mysterious and Marvelous Miscellanea Secrets of the Selkies Sinuous Sentinels Spells from the Forgotten Vault Spiritualist System Architecture: Motif Classes The Errant Seer The Ruin Stider The Spellbreaker Thematic Toolkit: Arcane Avenger Thematic Toolkit: Burning Gloom Thematic Toolkit: Carry the Darkness Thematic Toolkit: Cultist Thematic Toolkit: Hazardous Knowledge Thematic Toolkit: Itinerant Thematic Toolkit: Judge, Jury, and Executioner Thematic Toolkit: Master of Ceremonies Thematic Toolkit: Scrapper Thematic Toolkit: Storyteller Thematic Toolkit: Thunder of War Thematic Toolkit: Venomous Shadow Toil and Trouble Venture Forth