Local-first AI software for serious work

Tools for writers, makers, and people trying to keep the thread.

Vellumloop is the studio home for four native macOS products: Inkmoss for academic writing, Alephink for novel engineering, Chiselo for visual HTML finishing, and Sireon for personal planning. Files stay yours. AI stays reviewable. Work stays legible.

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Products

Each app has its own workflow, but they share the same contract: local files first, AI as a visible collaborator, and interfaces built for repeat work rather than demos.

Inkmoss

LaTeX-first academic writing

A native macOS academic workbench for LaTeX, Typst, Markdown, BibTeX, PDF preview, DOCX handoff, reference-vault context, and AI edits that arrive as diffs.

Alephink

AI-first novel engineering

A local-first novel engineering workspace for chapters, manuscript order, Story Bible, Memory Delta, research materials, and AI proposals that never silently become canon.

Chiselo

Visual HTML polishing

A finishing bench for existing or AI-generated HTML: click real DOM elements, edit text and layout visually, check delivery risks, then export HTML, PDF, or PPTX.

Sireon

AI personal planning desk

An AI personal planning workbench where chat, evidence, notes, plans, reminders, personal rhythm, and execution history stay in one local-first loop.

A small studio, not a cloud suite.

Vellumloop is a brand umbrella for tools that make local work easier to finish. The products are allowed to be different because the workflows are different.

Native surfaces Mac apps with real files, visible previews, and settings that belong to the workflow.

Reviewable AI AI proposes, repairs, organizes, and explains. The user decides what lands.

Plain handoff Export, preview, package, download, and share should feel like normal actions, not infrastructure work.

Principles

The tone is quiet on purpose: these products are meant to sit beside serious writing, planning, and making without turning the workspace into theater.

Local first

Important files live on the user's Mac by default. Cloud features are helpers, not the source of truth.

AI with review

AI can propose, explain, organize, and repair. It should not silently overwrite the user's work.

Native feel

The apps are built around macOS workflows, local files, fast previews, and focused work surfaces.

Plain words

TeX, HTML export, document conversion, memory systems, and scheduling logic should appear as human actions.