We check every product on this page once a day and record whether it still answers.
An offline desktop spreadsheet app with nested child sheets, each with its own schema, formulas, and validation rules.
Watch out · Desktop application, works offline.
Works offlineCan export my data
What to know▼
How it works
An offline desktop spreadsheet where any cell can open its own nested child spreadsheet with its own schema, validation, formulas, and forms, plus offline charting, PDF output, and a built-in chatbot workspace.
Best for
People with complex, structured data who find flat spreadsheet grids limiting.
We check every product on this page once a day and record whether it still answers.
One offline HTML tool for planning fiber broadband builds — data ingestion, gap analysis, route/BOQ, and a PM dashboard — replacing scattered planning spreadsheets.
Works offline
What to know▼
How it works
A single offline HTML tool covering four planning steps for fiber broadband builds: data ingestion/harmonization, MCDA gap analysis, live route optimization with a BOQ, and a PM dashboard with early-warning alerts.
What's different
Replaces scattered spreadsheets with one offline file combining ingestion, analysis, routing and program monitoring.
Best for
Teams planning fiber broadband deployments who currently plan in scattered spreadsheets.
We check every product on this page once a day and record whether it still answers.
Reads your Airbnb reservations to count real checkouts and flag same-day turnarounds, so you can check a cleaner's invoice without building your own spreadsheet. Runs locally, nothing uploaded.
FreeWorks offline
What to know▼
How it works
Reads your Airbnb Reservations page to count real checkouts, flag same-day turnarounds, and track revenue by listing, so you can check a cleaner's invoice without a spreadsheet.
What's different
100% local, zero data collected.
Pricing
Free.
Best for
Airbnb hosts verifying cleaning fees against real reservation data.
We check every product on this page once a day and record whether it still answers.
Offline Android vault app that encrypts passwords, photos, and PDFs locally, with Excel import/export for managing entries.
Watch out · Android only.
Works offlineCan export my data
What to know▼
How it works
Stores passwords, private photos, and sensitive PDFs in a local, cloud-free database on Android using AES-256 encryption, with Excel (XLSX) import/export to manage and restore the database from a computer or smartphone via spreadsheet.
We check every product on this page once a day and record whether it still answers.
A browser-based developer toolkit of 18 utilities (JSON, JWT, CSV, XML, Base64, Regex and more) that run entirely client-side, for developers who don't want to paste sensitive data into a tool that logs it.
FreeNo sign-upWorks offline
What to know▼
How it works
Runs 100% in the browser with zero data sent to any server; works offline, no signup, no account.
What's different
Built after a developer was fired for pasting an API response into a JSON formatter that logged everything.
We check every product on this page once a day and record whether it still answers.
Replaces spreadsheets for tracking gear and inventory with barcode scanning, borrower management, and audit logs.
Watch out · Currently in closed beta; request a demo for access.
Works offline
What to know▼
How it works
Scan barcodes for fast checkouts and returns, track who has what item, manage borrower status, and review transaction and audit logs, with offline-safe workflows.
Best for
Schools, teams, and busy checkout desks tracking gear.
Watch out
Currently in closed beta; request a demo for access.
