There's also 'Harry and Tom: The Forbidden Alliance'. It's a fanfiction that delves into a rather complex relationship between the two. They find themselves in a situation where they have to form an alliance against a common, dark enemy, and the story is filled with intense magical battles and emotional turmoil.
It's hard to name the best ones as it's a very subjective matter. However, you can start by looking at the most reviewed and bookmarked stories on popular fanfiction websites. The authors of those stories are likely to be very good at writing Harry and Tom fanfiction. Also, ask in fan communities. Other fans might be able to recommend some great authors based on their own reading experiences.
I really like 'A Twist of Fate in Hogwarts'. In this fanfiction, Harry, Draco, and Tom are all thrown into a series of mysterious events. It's fascinating to see how the author weaves their individual personalities into the plot. Tom's cunning, Draco's pride, and Harry's courage all play important roles in solving the mysteries.
There's a fanfiction called 'Harry Potter and the Lost Horcrux of Tom Riddle'. This one is quite exciting as it delves into the idea of a lost Horcrux that only Harry can find. The way it weaves in the relationship between Harry and Tom Riddle is really interesting. It also has some intense action scenes and a touch of mystery that makes it a great read for any fan of the Harry Potter universe.
I think Luna Lovegood would be an interesting character to include. Her unique perspective on magic and the world around her could add an element of mystery and wonder to the fanfiction. Also, Severus Snape. His complex past and relationship with both Harry and Tom (in a way, as Tom became Voldemort) could bring a lot of depth to the story. And Hagrid, who could provide a connection to the more gentle and nurturing side of the wizarding world, which might be important for Harry and Tom's relationship development.
One great 'Harry Potter Tom Riddle Fanfiction' is 'The Heir of Slytherin's Redemption'. It shows a different side of Tom Riddle, exploring what could have happened if he had been given a chance at a different path. It has a really interesting plot that keeps you hooked from start to finish.
One great 'Harry Potter' Tom Riddle slash fanfiction is 'The Heir of Slytherin's Heart'. It delves deep into the complex relationship between Harry and Tom Riddle. The author does an amazing job of exploring their characters in a new light, with a plot that keeps you on the edge of your seat.
Well, 'Tom's Redemption in Harry's World' is a really good one. It delves into the idea of Tom having a chance at redemption while in the same world as Harry. The story develops their relationship in an interesting way as they both learn from each other. 'The Meeting of Tom and Harry' is also a popular one. It starts with a chance encounter between them and then shows how that one meeting changes the course of their lives. And 'Tom and Harry: The Hidden Friendship' is a story that focuses on their friendship that has to be kept a secret for various reasons.
There's also 'Harry's Encounter with Tom Riddle through Draco'. This fanfiction is unique as it focuses on how Harry's relationship with Draco becomes a conduit to understanding Tom Riddle better. It has a lot of great dialogue and really shows how the three characters' fates are intertwined in unexpected ways.
One great 'tom riddle x harry fanfiction' is 'The Boy Who Lived to Conquer'. It has an interesting take on how Harry and Tom Riddle's relationship could develop in an alternate universe. The story is well - written with great character development.