Opportunities › Microsoft Excel alternative for Linux users › Proposed app
Gridhaven
Offline spreadsheets for Linux power users, with real .xlsx round-trips
- Score
- 24
- confidence 49
- Evidence
- 3
- items on the page
- Rivals
- 2
- named in sources
- First version
- 70 d
- estimate
- Type
- Desktop app
- PWA: runs in the browser, installs on Mac and Windows
- Market since
- 1999
- Mature market · AI estimate
ScreensConcept
Desktop app: Linux power users open .xlsx files, edit formulas, inspect compatibility, and manage team workbooks from a desktop with keyboard and full spreadsheet interface. Sample screens on a computer, in the proposed brand. Their numbers are sample data.
Compatibility
Safe to edit96%
About this appAI proposal
Gridhaven is an installable spreadsheet app for people who work on Linux and need more than a browser tab of Office. It installs from Chromium-based browsers on Fedora, KDE and other desktops, opens .xlsx files from disk, and keeps working with no connection.
It is built around the work power users do: large sheets, formulas, pivots, keyboard-first editing. It does not claim to be a full copy of Excel. Where a file uses a feature Gridhaven cannot run yet, it keeps the original data intact and tells you which cells are affected.
The aim is to fix what the material describes: web Office falls short for serious spreadsheet work, and existing Linux suites do not fully match Excel. Gridhaven starts with a narrower core and grows by the gaps its paying users report.
- Tagline
- A serious spreadsheet, at home on Linux.
- Voice
- PreciseCalmDirect
- Why this name
- A haven is a safe place to work. Grid names the sheet. Two plain words joined, easy to say and spell.
In the first version
Members say which features they would use. It tells PWAS what people want; it changes no score.
Open and save .xlsx without surprises
Reads and writes .xlsx from your local disk. Unsupported features are preserved in the file and flagged, never silently dropped.
No member yet
Works offline, installs like an app
Install it as a desktop app from your browser. Files, edits and formulas work with no network.
No member yet
Keyboard-first editing
Familiar shortcuts, a command palette, fill-down, jump-to-edge and multi-select, so your hands stay off the mouse.
No member yet
Formulas you can inspect
Trace precedents, see why a cell shows an error, and step through nested formulas one part at a time.
No member yet
Brand identityAI proposal
Check the name against trademark registers before using it.
Palette
#17433APine · primary#F7F4ECPaper · surface#1D2623Ink · text#D9A441Amber · accent#B4502EClay · errors and alerts
Typography
Aa
Gridhaven
ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789
A serious spreadsheet, at home on Linux.
PricingAI proposal
The material gives no competitor prices. These tiers are a starting point to test, not derived from the market. Evidence only says Linux users would pay; a perpetual license could also be tried.
Free
Free
- Open, edit and save .xlsx locally
- Compatibility report
- Up to 10,000 rows per sheet
Pro
$6 a month
- Unlimited rows
- Pivot tables and charts
- Formula tracing
- Offline install
Team
$10 a month
- Everything in Pro
- Encrypted shared workbooks
- Version history
- Per user price
Would you pay Pro · $6 a month?
Your answer tells PWAS which prices people accept. It changes no score.
No answers yet.
What it could be worthEstimate
What a software business making this much sells for today, from real deals. Pick a monthly revenue.
If it makes
Worth about
$194,000
Sale range $132,000 to $263,000
$120,000 a year in revenue
From 87 software businesses listed and sold on Empire Flippers in the last year, revenue vetted by the broker: they sell for about 19× their monthly revenue, most between 13× and 26×.
Measured on profit, the middle deal is 32× monthly net profit: about 2.7 years of profit.
An estimate, not an offer or financial advice. A real price depends on profit, growth, churn, how much of the work is the owner's, and the buyer.
How it would growAI proposal
How the product would reach new customers through its own use, and how the first ones would be found. A plan to test, not a result.
- Built-in loop
- Shared outputs. Users send .xlsx files and read-only links to colleagues. Recipients can open them in the browser, and the compatibility report shows what Gridhaven handled.
- Do they become customers?
- Recipients are often Excel users on Windows, so few become buyers. Test whether Linux colleagues who receive a link install it and move to a paid plan.
- First customers
- Freelance data analysts and engineers who run Fedora or KDE as their main desktop and exchange .xlsx files with clients.
- Where to reach them
- Hacker News: Show HN post with a demo of the compatibility report, replying to the threads asking for a Linux Excel.
- Linux subreddits and forums: Share in Fedora and KDE communities, asking for real workbooks to test and failing cases.
- Open-source newsletters: Offer a free tier and a writeup on round-trip fidelity for Linux-focused newsletters.
- First milestone
- Fifty real workbooks tested and ten paying Pro users who work on Linux within 60 days of launch.
Why people already pay for this
- Public claimLinux users would pay for native Excel application
- Public claimWeb-based Office is inadequate for professional spreadsheet work on Linux
- VerifiedSoftmaker Office's pricing page lists 7 paid plans, at RON 20.99 a month
Tech stack
Every proposal builds on the same PWA base, installable from the browser on any phone or computer. Dashed boxes are what this app adds.
- AppNext.js and TypeScript
- PWAManifest and service worker
- UITailwind CSS
- Data and authSupabase Postgres
- PaymentsStripe
- EmailResend
- HostingVercel
- This app · Spreadsheet engineFormula calculation engine in WebAssemblyRecalculating large sheets in the browser needs more speed than plain JavaScript.
- This app · .xlsx file handlingOpen-format spreadsheet parser and writer libraryRound-tripping .xlsx faithfully is the core promise.
RisksAI inference
- TechnicalMatching Excel formulas, pivots and formatting is a very large job. A first version covers a core subset, and users who rely on macros or rare functions may leave.
- CommercialEvidence is public claims from one forum. Whether Linux users pay, and against free suites, is untested.
- PlatformA PWA is not a native Linux app. Install and file access depend on Chromium; Firefox support is limited, which may fail the 'native' expectation.
- TechnicalBrowser memory limits may cap very large workbooks, which power users are most likely to have.
- Intellectual propertyImitating Excel's look or file behavior closely could raise trademark or trade dress questions. Use original design and open file formats.
Everything marked AI proposal or AI inference was written by a model from the evidence on the opportunity page. The proposed name must be checked against trademark registers before it is used.