Credits and Acknowledgements

Spleen is designed, developed, and maintained by Olaf.

This manual was created as a companion to the Spleen workspace: a guide for writers who want to understand how their projects are structured, edited, exported, and preserved inside the app.

Spleen grew out of a simple wish: to make a calm, focused place for serious writing. Not a noisy productivity system, but a workspace where projects can slowly take shape through drafting, revision, order, and care.

Many thanks to the open source projects, libraries, tools, and communities that make Spleen possible. Thanks also to the people who tested early versions, shared feedback, noticed rough edges, and helped make the app clearer and more useful. And, last but not least, thanks to my wife Luba, who supported me throughout the development process.

This manual, like Spleen itself, will keep improving over time.

Open source acknowledgements

Spleen is built with the help of open source software. These projects make it possible to build and maintain Spleen as a small, focused writing app.

Application framework and language

• SvelteKit
• Svelte 5
• TypeScript

Interface and design

• Tailwind CSS
• shadcn-svelte
• Bits UI
• mode-watcher

Authentication and data

• Better Auth
• Drizzle ORM
• PostgreSQL

Writing, editing, and export

• Tiptap
• ProseMirror
• markdown-it
• PDFKit
• Nodemailer
• qrcode

Icons and visual elements

• Lucide
• Remix Icon
• LayerChart

I am grateful to the maintainers and contributors of these projects.