Platform

Nimbus

A reading experience designed for depth.

Nimbusisalocal-firstebookreaderbuiltforseriousreaders.Noclouddependencies.Notracking.Justyourbooks,yourannotations,andaclean,distraction-freeenvironmentdesignedforlong-formreading.

Features

Local-First

Your library lives on your device. No internet required to read.

Powerful Conversion

Import EPUBs and other formats seamlessly. Original files preserved.

Semantic Search

Find passages by meaning, not just keywords, with on-device AI embeddings.

Smart Pagination

Pre-computed page layouts for e-ink devices — no waiting, no reflow delays.

Annotation-Ready

Highlights, notes, and bookmarks that sync across your devices when you choose.

Modern Typography

Variable font support, incremental font loading, and precise text rendering.

Technical Philosophy

—Privacy by design — No cloud account required. No reading data leaves your device unless you enable sync.

—Offline-capable AI — Embeddings and search run locally.

—Future-proof format — Built on open standards.

In active development. Early builds available for macOS and Linux.

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