Small decisions can change canon events. One small decision can change the fate of not only a small boy, but also an entire world. Fusion with Forever Knight. Minimal mentions of past child abuse/neglect. Complete AU, Pre-Hogwarts through Hogwarts years. No slash.

Takes Place: 0 - Pre Hogwarts (before Harry is 11), 1st Year - Snape flavour: None
Tags: Adoption, Alternate Universe, Baby fic, Child fic, Vampires
Categories: Master Snape > Apprentice Harry, Teacher Snape > Professor Snape, Misc > Keepers of the Snitch

As far as Harry knew, it was all some sort of experiment that only Dumbledore could understand. He had no idea that the cat he had been given to keep him company instead of Hedwig over the holidays before his 3rd year, was in fact, his hated Potions Master in disguise.

Because of the Azkaban escapee, Sirius Black, Severus is sent to stay with Harry during the entire summer, never making a sound nor leaving the boy's side. He could not speak, nor could he defend Harry against anyone other than the criminal on the loose, however Severus does something that no other adult in Harry's life had done before...he listened.

Takes Place: 3rd summer - Snape flavour: None
Tags: Creature!fic, Snape-meets-Dursleys
Categories: Parental Snape > Guardian Snape

Sev, Lily, and Harry are trying to live as a happy family, running an apothecary in Diagon Alley, after Lily divorced James years before. But James keeps trying to sabotage their relationship out of petty jealousy and tries to get custody of Harry by badmouthing Severus and attempting to ruin his reputation, using all his money and connections to do so. Features a Good! Tom Riddle. An eventually redeemed and de-aged James Potter also. Entrant in the 2009 Prompt Fest. Prompts: Scourgify! and Needle in a Haystack

Takes Place: 0 - Pre Hogwarts (before Harry is 11) - Snape flavour: None
Tags: Alternate Universe, Azkaban Character, Child fic, Deaging
Categories: Parental Snape > Stepfather Snape

Harry's compassion spells trouble when he switches places with Peeves and becomes a ghost, then Peeves disappears. Can Severus and his friends help him out, or is he doomed to haunt Hogwarts forever in Peeves' place? AU, godfatherSev, HufflepuffHarry!

Takes Place: 1st Year - Snape flavour: None
Tags: Alternate Universe
Categories: Parental Snape > Godfather Snape, Parental Snape > Guardian Snape

Everyone seems to have forgotten that the Boy-Who-Lived exists. Harry's friends don't remember who he is. It's a struggle for Harry to hold on to reality as he knows it, while at the same time coming to terms with who he really is. He finds Snape an unexpected ally in the struggle that ensues to reclaim his identity. 6th year AU. (Harry is gay)

Takes Place: 6th Year - Snape flavour: None
Tags: Alternate Universe
Categories: Teacher Snape > Trusted Mentor Snape, Parental Snape > Guardian Snape, Teacher Snape > Professor Snape