Proper 2D CAD in the browser. Walls that resolve their own junctions, doors that carry a swing, rooms that measure themselves, and a command bar that takes a typed dimension.
Most drawing tools that run in a browser are sketch tools wearing a CAD costume. You find out which when you try to draw a corner. Linea is built on real wall topology, real snapping and real sheet output, because a plan that cannot be issued is not a plan. It is included on every plan and it costs no credits to use.
Wall topology is a node graph underneath, so junctions resolve and corners mitre properly. You are drawing a wall, not two rectangles you then have to tidy up.
Nine stages of it: endpoint, intersection, midpoint, centre and quadrant, tangent, perpendicular, extension, wall-line and grid. Accuracy comes from the tool rather than from zooming in and squinting.
The command bar takes input the way a draughtsman expects it. 3000 for a three metre run, @dx,dy for a relative move, @dist<angle for a bearing. No dragging to length and hoping.
Close a set of walls and the enclosed spaces are detected automatically, each with its area calculated. Schedules stop being a separate exercise done by hand at the end, which is exactly when they go wrong and nobody notices until the drawing is out.
A door cuts its opening and carries its swing arc. A window carries its mullions. Both stay bound to the wall they sit in, so moving the wall moves the opening with it. Furniture and arrays work the same way. Editing a scheme should not mean repairing it.
Layers and properties for control over what reads and what recedes, section views for the thing a plan cannot show, and sheet views for laying the drawing out at a scale someone can actually work from. Autosave runs throughout, with two-tab conflict detection and a hundred steps of undo behind you.
Bring existing drawings in as DXF and take the work back out as DXF for CAD or PDF to issue. Nothing you draw is trapped here. A drawing tool that cannot hand over is a liability on a live job, however good it is to draw in.
Architectural objects with the behaviour that goes with them, rather than shapes you have to keep in line yourself.
Lines, arcs and circles, plus offset, mirror, trim and extend, and array. The operations you reach for without thinking.
Control what reads, cut the section, and lay the drawing out on a sheet at a working scale.
DXF import, DXF and PDF export, autosave with two-tab conflict detection, and a hundred steps of undo.
Every ArchAdemia Tools plan includes everything on this page. From £29 a month, all in, with no per-tool fees and no surprise charges.