Show HN: Nobie – an Excel-compatible runtime for agents and humans

📝 Discussion Summary (Click to expand)

Free native Excel‑compatible runtime – Nobie is a second runtime (written in Rust) that works as a desktop app and CLI on macOS/Linux, staying free forever for all spreadsheet work.

"Nobie is free and always will be for everything you can do in Excel." — matthewgapp
Monetization via optional cloud/AI services – The core tools are open‑source and cost‑free; revenue will come later from paid cloud/API/AI offerings and enterprise governance.

"The short version is: the desktop app and CLI are free and always will be; optional cloud & AI services will cost money." — matthewgapp
Rich programmable & Git‑friendly features – The CLI can render PNG/PDF, expose JSON APIs, pipe DB queries, auto‑launch AI agents, and support git‑diff style change tracking; it also fully supports advanced Excel formulas.

"You can programmatically edit workbooks … and the workbook will update properly, AND recalc incrementally, AND the numbers will tie with Excel." — njaremko
"We fully support the formula language, and workbook semantics." — njaremko

🚀 Project Ideas

Generating project ideas…

Makes .xlsx files diffable by exporting cell data, formulas, and formatting to plaintext JSON/YAML, enabling native Git tracking.
Solves the version‑control pain point highlighted by HN commenter “patrickkidger” who wanted git‑compatible spreadsheets.

Key	Value
Target Audience	Data analysts, finance teams, developers working with Excel workbooks
Core Feature	Export/import plaintext representation; incremental diff UI; merge helper for workbooks
Tech Stack	Node.js/Go CLI, JSON Schema, React front‑end, Git libraries, optional Rust for Excel parsing
Difficulty	Medium
Monetization	Revenue-ready: per-seat subscription

Directly addresses the “make xlsx files be git-compatible” request from the discussion.
Likely to attract open‑source contributors and CI/CD integrations, sparking strong community interest.

Provides a modern spreadsheet UI with European number formatting as the default and seamless CSV import support.
Addresses the “european number style as standard” and “import/open csv” feature requests from users.

Key	Value
Target Audience	EU‑based finance professionals, students, small businesses using regional number conventions
Core Feature	Locale selector; drag‑and‑drop CSV import; auto‑conversion of locale‑aware formulas
Tech Stack	React + TypeScript, Electron/Qt for desktop, Python back‑end for CSV parsing, optional PostgreSQL
Difficulty	Low
Monetization	Hobby

Users explicitly asked for these regional features; offering them out‑of‑the‑box should drive immediate adoption.
Low development barrier encourages community plugins and extensions.

Delivers an MCP‑enabled CLI/GUI that lets LLMs pipe natural‑language queries directly into workbooks, auto‑generating JSON APIs and synchronizing calculations with Excel.
Implements the “pipe a postgres query into an xlsx file, then run excel formulas” capability mentioned in the thread.

Key	Value
Target Audience	Data engineers, AI developers, business analysts using LLMs to manipulate spreadsheets
Core Feature	Query‑to‑workbook API; incremental calculation sync; auto‑generated JSON endpoints
Tech Stack	Python FastAPI, Rust calculation engine (similar to Nobie), Docker, OpenAPI spec, optional hosted SaaS
Difficulty	High
Monetization	Revenue-ready: usage‑based API pricing (per GB processed)

Integrates multiple discussed features—AI agents, programmatic workbook access, and eventual paid cloud services.
Will appeal to the growing community interested in AI‑augmented data workflows.