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Full Flutter + TensorFlow Lite source code for an offline AI object-counting app (workers, pipes, bricks), sold for reuse rather than offered as a hosted product.
Works offline
What to know▼
How it works
Flutter + TensorFlow Lite app, works 100% offline, claims 95%+ accuracy across 10+ categories.
Pricing
$49 for full source code.
Best for
Developers building for construction/warehouse counting use cases; buyers reselling or white-labeling.
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A desktop PDF editor built to stay smooth on huge CAD and construction drawing exports from AutoCAD, Revit and ArchiCAD, running fully offline so drawings never leave your machine.
FreeNo sign-upWorks offline
What to know▼
How it works
A desktop PDF editor for Windows and Mac built to stay smooth on scroll, zoom and pan across heavy AutoCAD, Revit and ArchiCAD exports and project sets of 50-200MB or more. It runs locally on the user's machine.
What's different
Targets the specific failure mode of general PDF tools — stalling and stuttering on dense CAD/construction drawings with heavy vector line work and hatches — and processes files fully offline.
Best for
Architects, structural/civil engineers, MEP professionals and construction teams working with large, heavy drawing sets.
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Lets field-service workers (cleaners, handymen, landscapers, painters, inspectors) fill in a job template with before/after photos and a signature, then send a branded PDF proof-of-work report with GPS and weather stamped in. Works offline, no account needed.
No sign-upWorks offline
What to know▼
How it works
Field-service workers fill in a job template with before/after photos and a signature, then send a branded PDF proof-of-work report with GPS and weather stamped in before leaving the job.
What's different
Works offline and needs no account.
Best for
Cleaners, handymen, detailers, landscapers, pet sitters, inspectors and painters who need proof-of-work for every job.
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An iOS app for tradespeople that scans van receipts with on-device OCR and shows live job profit per job.
Watch out · iOS only.
Works offline
What to know▼
How it works
Scan receipts from the van; on-device OCR reads each line, matches the right job automatically, and shows live net profit per job, with optional cloud AI for faded receipts.
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Opens, measures and marks up DWG/DXF CAD files in the browser without installing AutoCAD; parsing happens locally so files aren't uploaded. Aimed at contractors and reviewers, not software developers.
FreeNothing to installWorks offline
What to know▼
How it works
Opens DWG and DXF CAD files directly in the browser without AutoCAD, letting you view layers, search labels, measure distances, mark up issues, convert between DWG/DXF/PDF, and share view-only links. Supports DWG formats from R12 through 2024.
What's different
Parses files locally in the browser by default rather than uploading them to a server, and requires no AutoCAD license or install.
Pricing
Free.
Best for
Contractors, engineers, and reviewers who need to view or mark up CAD drawings without owning AutoCAD.
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All-in-one HVAC field-service software for work orders, scheduling, dispatch, quotes and invoices that keeps working offline in basements and syncs once back online. Free for a 3-month pilot, not permanently free.
Works offline
What to know▼
How it works
All-in-one HVAC software for small service shops covering work orders, scheduling, dispatch, quotes, invoices, and customer history; works offline (e.g. in basements) and syncs automatically once back online.
Pricing
3-month free pilot, no card required.
Best for
Small HVAC service teams that need field software that keeps working without signal.
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Offline-first scheduling, dispatch and invoicing software for field service contractors and trades, with no per-transaction payment processing fees taken by the platform.
Works offline
What to know▼
How it works
An offline-first Progressive Web App for field service management: technicians manage jobs, check inventory, and build estimates without a connection, syncing once they hit cellular service. Includes Good/Better/Best tiered quoting for estimates.
What's different
0% payment processing fees — businesses can use their own processor or peer-to-peer QR codes instead of standard card fees.
Pricing
Flat pricing model with zero feature-gating.
Best for
Field service contractors and trades who often work without reliable connectivity.
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AI writing tools for Chrome — rewrite, proofread, summarize — that run on-device with Gemini Nano so your text never leaves the browser. Free to install.
FreeWorks offline
What to know▼
How it works
A Chrome extension that rewrites text in any tone, proofreads, summarizes, and transforms text on any page, running the AI model on-device using Gemini Nano.
What's different
Processing happens on-device with Gemini Nano, so text doesn't leave the browser, unlike cloud-based writing assistants.
Pricing
Free on the Chrome Web Store.
Best for
Chrome users who want AI writing help on any webpage without sending their text to a server.
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A mobile app for solo trade contractors, plumbers, electricians, HVAC techs and roofers, to log a job, send the invoice and get paid in three taps instead of crew-priced tools like Jobber.
FreeWorks offline
What to know▼
How it works
A native mobile app (iOS and Android) for solo trade contractors to log a job, send an invoice, and collect payment in three taps.
What's different
Mobile-first and priced for a single contractor, unlike crew-priced field-service tools like Jobber, Housecall Pro, or ServiceM8 that cost $50-200+/month.
Pricing
Free tier available.
Best for
Solo plumbers, electricians, HVAC techs, landscapers, cleaners, handymen, painters, roofers, and remodelers.
