CAD & Architecture Software
FreeCAD
Truly freeFully free and open source with no sign-up or paywall; includes a dedicated BIM/architecture workbench plus general 3D parametric modeling.
LibreCAD
Truly freeCompletely free and GPLv2 open source with full 2D drafting; it is 2D-only with no 3D modeling.
SolveSpace
Truly freeFully free and GPLv3 open source with no install required on Windows; geared to mechanical/geometric parts rather than full BIM.
Autodesk Fusion
Free, with limitsFree for hobbyists with limited functionality, restricted to personal non-commercial projects; commercial use requires a paid subscription.
DesignSpark Mechanical
Free, with limitsThe Explorer plan is permanently free with no hidden fees, importing STEP/IGES/STL and exporting; advanced tools require paid Creator/Engineer plans.
Onshape
Free, with limitsFree plan gives full browser CAD for non-commercial use, but all documents are stored publicly and visible to everyone.
QCAD
Free, with limitsThe open-source Community Edition is free forever for 2D drafting; the Professional add-on runs only 15 minutes at a time in trial mode until purchased.
Roomle
Free, with limitsFree, sign-up-based 2D/3D room planner for drawing floor plans and furnishing rooms (including AR), with cloud-synced plans; advanced/white-label features are commercial.
Archicad
Free trial onlySelf-serve 30-day full-feature trial (one seat) including BIMcloud Basic and BIMx; no permanent free tier outside the student/educator version.
AutoCAD
Free trial onlySelf-serve 15-day free trial of the full product; it expires automatically and there is no permanent free tier (only student/edu licenses).
Autodesk Revit
Free trial onlySelf-serve 30-day free trial of the full BIM product; it expires automatically with no permanent free tier outside student/edu licenses.
BricsCAD
Free trial onlyFull-featured 30-day self-serve trial covering all levels up to BIM and Ultimate; no permanent free tier after.
DraftSight
Free trial onlySelf-serve free trial of the Premium 2D/3D DWG product via a download form; a paid subscription is required after.
Home Designer
Free trial onlySelf-serve trial via a request form with feature limitations (saving/printing restricted); full version is an annual or monthly subscription.
Rhino
Free trial onlySelf-serve 90-day full evaluation with no credit card; after 90 days saving and plug-ins stop working until a license is purchased.
TurboCAD
Free trial onlySelf-serve free trial of TurboCAD Platinum delivered by email after a download form; a license purchase is required after the trial.
Vectorworks Architect
Free trial onlySelf-serve 7-day full-feature trial after creating an account; no permanent free tier outside student/edu versions.
ZWCAD
Free trial onlySelf-serve 30-day full-feature trial that starts automatically after install with no activation code; a license is required afterward.
nanoCAD Free
Free trial onlyLegacy v5 is free for non-commercial use with native DWG, but requires registration and yearly license renewal and lacks the newest DWG and advanced tools.
progeCAD Professional
Free trial onlySelf-serve 30-day trial of the full 2D/3D DWG/DXF product via a download form; a perpetual license is required afterward.
What to look for in cad & architecture software
The best CAD and architecture software in 2026 ranges from simple 2D drafting tools to full BIM platforms that model an entire building with real data. For homeowners and students, free or low-cost 2D/3D tools cover house plans and concept modeling. Professionals lean on paid BIM and CAD suites for precise drawings, documentation, and collaboration. Open-source and free-tier options exist and are genuinely capable for learning and small projects, while industry-standard suites carry subscription costs. Below we compare each tool by drafting and modeling features, file compatibility, free limits, and price.
2D drafting vs 3D/BIM. Decide whether you need precise 2D drawings, full 3D modeling, or data-rich BIM. Heavier tools offer more but add cost and a steeper learning curve.
File compatibility. DWG, DXF, IFC, and RVT support determine whether you can collaborate and exchange files. Check that a tool reads and writes the formats your team or builder uses.
Measurement precision. Architecture work requires accurate, to-scale geometry and dimensioning. Confirm the tool supports real-world units, constraints, and detailed annotation.
Learning curve and support. Industry CAD suites are powerful but demanding. Look at available tutorials, community size, and whether the interface suits beginners or assumes experience.
Platform and hardware needs. Some tools are Windows-only or hardware-hungry; others run in the browser or on Mac and Linux. Match the software to the machine and OS you have.
Free tier, student, or open-source options. Many vendors offer free student licenses, free tiers, or open-source alternatives. Compare what's included and whether commercial use is permitted.
Questions, answered
Is there free architecture software?
Yes. There are free architecture tools, open-source CAD programs, and free student licenses from major vendors. Free options are capable for learning, concept work, and small projects, though some restrict commercial use. Compare the free tiers in the table above.
What software do architects actually use?
Many professional architects use BIM platforms for documentation and CAD suites for drafting, often alongside 3D modelers for concept work. The exact mix depends on the firm and project type. Several of these tools have free trials or student versions to learn on.
What is the difference between CAD and BIM?
CAD focuses on drawing geometry, in 2D or 3D, while BIM builds an intelligent model where elements carry data like materials and dimensions. BIM supports documentation, scheduling, and collaboration across a building's lifecycle. Many tools blend both approaches.
Can a beginner learn CAD software?
Yes. Some CAD and architecture tools are designed for beginners with drag-and-drop interfaces and guided tutorials. Industry-standard suites have steeper learning curves but extensive training resources. Start with a free-tier tool that matches your goals.