Talmaara

Talmaara is a worldbuilding workspace with a book editor built into it. Everything in your world shares a single timeline, even across multiple worlds.

Every date you enter — a king's death, a war, an era, a scene in chapter nine — is stored as pure math along the timeline. It doesn't matter that you invented a planet with 19-hour days, a 400-day year, five made-up months, and a calendar that has 5 eras. Underneath, it all reduces to the same math, so everything you write down can line up with everything else on its own.

Key features no other site has:

• The timeline fills itself in. You never "add" anything to a timeline. Give a character a birth and a death and their lifespan appears automatically; give an event a start and an end date and it just appears; every world aligns together to show where their eras start and end; Add a date to a scene in your book and it lands there too, right next to the history it happens in; Zoom from a single night out to ten thousand years.
• The family tree works out the words for you. You only ever record parents, children, and marriages. Talmaara figures out the rest — siblings, half-siblings, step-siblings, aunts and nephews, "second cousin once removed," "great-great-grandmother." Add one brother to a character and a whole branch of correctly labeled cousins appears, four and five steps out. You never type the word cousin.
• Links go both ways. Link a character to the city they were born in, the faction they betrayed, and the war they died in, and all three list them back. Nothing gets entered twice, and there's no blank wiki to wire up first.

Then the payoff. Because your manuscript and your world share the same dates and the same links, Talmaara can check one against the other and flag real contradictions: a character who died in book one showing up in book three, two people in the same place at an impossible hour, an event mentioned before it happens, a parent younger than their child. It shows you the exact scene and line. It's date math based on facts you entered, NOT an AI language model. No AI reads your manuscript, and Talmaara never writes a word for you.