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A writer's IDE for novelists building complex worlds.
We're building a desktop app for fantasy, sci-fi, and epic fiction writers who outgrow generic note-taking tools and find traditional word processors too unstructured for series-length worldbuilding. Think: the structural discipline of Scrivener, merged with the contextual intelligence of a software IDE.
Mythos reads your whole series the way a compiler reads a codebase — so a character who died in Book One can't quietly speak again in Book Two without the environment flagging it.
Mythos is built as a multi-repository ecosystem, separating the engine, the interface, and the site.
| Repository | What it is | Built with |
|---|---|---|
mythoside-core |
The engine — manuscript data model, Markdown + YAML file format, file watching, and a JSON-RPC server over stdio (no network port). | Rust |
mythoside-ts |
The desktop client — the editor surface, hosting the engine as a sidecar. | Tauri · React · TypeScript |
mythoside-website |
The landing page and product story. | Vite · React |
- Built for fiction, not notes — a Series → Book → Chapter hierarchy that's built in, not something you configure yourself.
- Contextual world-building — type
@CharacterNameand get an instant profile card without leaving your draft. - Local-first, always — plain Markdown + YAML frontmatter is the real source of truth. Your novel isn't held hostage by a server; a local SQLite (FTS5) index for instant cross-referencing is planned as a rebuildable cache, never the source of truth.
- Continuity as diagnostics — the environment treats worldbuilding with an IDE's rigour: reference a character after their death, or place them in two locations at once, and it tells you.
Early development. Follow along, star the repositories, or jump into Discussions if you're building epic-length fiction and want a say in how this shapes up.
- Issues & feature ideas → Core · Desktop
- General questions → Discussions
| Reach us about | |
|---|---|
| General questions | hello@mythoside.com |
| Support & help | support@mythoside.com |
| Security reports | security@mythoside.com |
| Press & media | press@mythoside.com |
| Careers | jobs@mythoside.com |
| Legal | legal@mythoside.com |
| Social & community | social@mythoside.com |
Please report security vulnerabilities privately to security@mythoside.com — do not open a public issue.
