15 minutes.
Sketch. Place anything. Export PDF.
3D + 2D CAD for the trades — carpenters, installers, contractors. Sketch the building, place panels, framing and inverters, export PDF and DXF. Runs offline on your own machine. €197 once, lifetime. No subscription, no cloud.
✓ Try free for 14 days first · ✓ No subscription · ✓ Lifetime updates
SketchUp Pro $399/yr · AutoCAD LT $540/yr · Autodesk Fusion $680/yr. Diaz Editor: €197 once in beta, then €197 lifetime. No subscription.
Sketch the building, layer by layer — from foundation to panels.
Everything for your installation workflow
3D for client presentations. 2D for the installer. One tool for both.
3D Building Editor
Site → building → level → walls → components. Hierarchical selection and snap-to-grid.
2D CAD Module
Classic 2D floor-plan drafting for the workshop. DXF import and export, layers per discipline.
Component Library
Framing, furniture, kitchen, bathroom, fixtures — 122 3D objects, twelve of them energy: PV panels, home battery, inverters, heat pump, buffer tank, boiler, smart meter, DC combiner, MVHR. Plus 14 schematic symbols for the 2D drawing, six for energy.
PDF Reports
Cover page, floor plan with title block, bill of materials (BOM). Client-ready.
Local-only
No cloud, no account. Your projects never leave your PC — only anonymous update-checks + opt-out usage stats, never your designs.
EN / NL / ES
Three languages built-in. Switch between them while working.
Why I built this
No funding, no sales team — a solo developer who needed a tool that didn't exist, and built it.
Read the full story →18 months ago I was combining solar, battery, heat pump and electrical for one customer — in Excel, because no single tool did all four. So I forked Pascal Editor (MIT, 14 years stable) and built what I needed: local, one payment, no cloud lock-in.
If I get hit by a bus tomorrow, buyers can fork it — Pascal Editor's MIT license still applies. No subscription to cancel, no server to shut down, no ransomware risk. A promise with legal backing, not marketing copy.
Real customer reviews will appear here as customers share them — never paid, never fabricated.
Pay once, use forever
No subscriptions, no recurring fees. 14-day free trial. After that, one payment = always the latest version.
Founding
- All Trial features
- 1 device
- All future updates included
- Email support within 5 business days
Introductory price — rises at v0.5
Licentie
- Everything in Founding
- 3 devices
- Email support within 2 business days
- 30-min phone intake
- Early beta access
Introductory price — rises at v0.5
Pro
- Everything in Licence
- 10 devices
- Priority feature requests
- 60-min onboarding call
Introductory price — rises at v0.5
For business & institutions
Bulk licenses, agency rights, or educational institutions — all lifetime.
Educational
- All Pro features
- 25 student/teacher seats
- No commercial use
- Lifetime for the institution
Download Diaz Editor
14-day free trial, no credit card. After that: €197 once, lifetime, 3 workstations.
Mac version waiting on the Apple Developer certificate. Want to be notified? Get the licence — Mac build sent automatically when ready.
Or: skip the trial and buy the €197 licence directly.
By downloading you agree to the EULA and terms. First launch, Windows may show a one-time “unknown publisher” notice — More info → Run anyway (why it’s safe). Linux AppImage runs out of the box.
Compare Diaz Editor with your current tool
Honest comparisons — when Diaz wins, when the competitor fits. No bashing.
vs SketchUp Pro
$399/yr subscription vs €197 lifetime. When SketchUp's 3D Warehouse is worth it — and when it isn't.
vs AutoCAD LT
$540/yr for 2D only vs €197 lifetime for 3D + 2D. When .dwg compatibility still matters.
vs Autodesk Fusion
$680/yr cloud CAM-CAD vs €197 lifetime building CAD. Two different worlds.
vs Rhino 8
Both one-time: $995 NURBS modeler vs €197 building CAD. Different jobs.
vs BricsCAD
Both perpetual. €620 DWG-native vs €197 building-focus. AutoCAD-power vs trade-workflow.
vs FreeCAD
Free open-source vs €197 polished. 40-hour setup vs 30-min ready. Time is the trade-off.
vs Aurora Solar
$2-3K/yr solar-only enterprise vs €197 lifetime multi-discipline. For solo + SMB installers.
Which fits you? (quiz)
30-second diagnosis. 6 questions → tool recommendation. Honest — can recommend a competitor.
Built for your trade
Trade-specific landings with use-cases, examples, and components that match your work.
For carpenters
Dormers, extensions, furniture, joinery. 3D for client, 2D for the shop.
For contractors
Small construction firms 1-25 people. Design + work-prep + client report in one tool.
For work preparation
From sketch to execution drawing. Layers per discipline. DXF for subcontractors.
For solar installers
Panels + battery + heat pump + inverter on one building model. PDF + permit pack. €197 vs Aurora $9,540 over 5 years.
For electricians
Wiring schematics, panel layouts, NEN1010/NEC code reports. DXF for downstream contractors.
For woodworkers
3D furniture, bill of materials, DXF for CNC router. Vs SketchUp $399/yr = €197 once.
Frequently asked questions
Do I need internet to work?
No. Diaz Editor runs entirely locally on your PC. Internet is only needed for the initial download and optional update checks (disabled by default).
What happens to my projects?
Projects are saved as JSON/DXF files on your PC, with a local working copy kept by the app. No cloud, no Diaz Atlas server. Backups are your responsibility.
How many devices per license?
Founding: 1 seat. Licentie: 3 seats. Pro: 10 seats. Educational: 25. Per seat = 1 active installation. Switch between devices by deactivating in the old install and activating in the new.
Can I get a refund?
Yes — a 14-day money-back guarantee on every licence. Email juan@diazatlas.com with your order reference within 14 days of purchase; processed within 5 business days. At checkout you also waive the statutory withdrawal right in exchange for immediate access (Directive 2011/83/EU art. 16(m)); the 14-day guarantee is a promise we give on top of that.
Does it work on Mac or Linux?
Currently Windows and Linux (64-bit). macOS is on the roadmap.
Open source?
Diaz Editor builds on Pascal Editor (MIT). The extra modules (2D CAD, license system, branding) are proprietary under the Diaz Editor EULA. See NOTICE in the install folder.
What you get for €197
One-time. Lifetime. 3 seats. No subscription.
- Diaz Editor Pro — lifetime license for your full workday
- 3 seats — you + your foreman + your work-prep ✓
- All trades in one tool — building, carpentry, electrical, plumbing, mechanical, solar 4 tools saved
- DXF export — works with any architect, contractor, or installer Included
- 1-click PDF export — quote, work-drawing, and BOM in one pack Included
- DXF + CNC export for the workshop — cut lists, sheet layouts, mill paths Included
- All future updates — v0.4, v0.5, v0.6... Included
- Feedback form that reaches the developer directly Included
Built for self-employed tradespeople + small teams (1-10 people). Not for architects or utility-scale engineering — AutoCAD and Aurora are better at those.
Introductory price:
€197 today
✓ 14 days money back. ✓ No subscription, ever.
Stripe checkout. Instant download after payment.
Related guides
- CAD-software voor ZZP-timmerman [NL]
- Solar design software voor Nederlandse installateurs [NL]
- Thuisbatterij-ontwerp & saldering 2027 [NL]
- NEN 1010 zonnesysteem-eisen [NL]
- Software de diseño solar para instaladores en España [ES]
- CAD gratis para instaladores fotovoltaicos [ES]
- Diseño solar autoconsumo (RD 244/2019) [ES]
- Multi-discipline solar design workflow [EN]
The CAD cheat sheet — free
One page with the keyboard shortcuts and layer conventions we use for installation drawings. No account needed.
PDF plus one follow-up email about Diaz Editor. Nothing else, unsubscribe any time. Privacy.