ArchDev99
For Open CAD Studio

Architecture tools for Open CAD Studio

Walls, doors and windows, axes, rooms, GOST schedules — one click from a single panel

Coming soon

Windows 10/11 · Open CAD Studio 2026.43+

Pro: 2$ — 30 days14 days of Pro free
Open CAD Studio — house-plan.dwg
123АБLiving room28,9 m²Kitchen11,3 m²Bathroom7,8 m²60004200
ModelX: 3240Y: 1820ORTHOSNAP
ArchDev99 panel docked next to the Open CAD Studio window: wall, door, window, axes and schedule buttons

Features

Every part of the drawing from one panel, one click at a time.

Axes

  • Type the spacings: "3000 6000*2 3000" and columns 1, 2, 3 with rows А, Б, В are drawn
  • Axis marks follow ГОСТ 21.101 and the drawing scale
  • Placed with one click, object snap works

Walls

  • Thickness from a list: 380 / 250 / 120 / 400 / 200 / 100 mm
  • Draw the centre line with CAD's own PLINE command: snap, ortho and polar tracking all work
  • Walls from lines, polylines, rectangles, circles and arcs
  • Corners and T-junctions are trimmed automatically

Doors / Windows

  • Pick a ready item from the database: mark, size and name come from it
  • The opening in the wall is cut automatically
  • Single and double-leaf doors; windows get a sill height
  • The database can be edited in Excel

RoomsPro

  • Click inside a room: the outline is found from the walls and does not "leak" through doors
  • Area, number and tag per ГОСТ 21.501
  • Columns and shafts are subtracted from the area
  • After moving a wall, "Update all rooms" recalculates everything

ГОСТ 21.501 schedules

  • Empty tables: Экспликация помещений, Ведомость отделки, Экспликация полов, Ведомость перемычек, Спецификация элементов заполнения проемов
  • Schedule from blocks: identical marks merge into one row and are counted (Pro)
  • Columns and formulas are edited in the database
Hotkeys (when CAD or the panel is in front): Ctrl+Alt+W wall, Ctrl+Alt+X axes, Ctrl+Alt+D door, Ctrl+Alt+O window, Ctrl+Alt+R room, Ctrl+Alt+T table, Ctrl+Alt+Space repeat the last command.

How it works

  1. Install Open CAD Studio and ArchDev99

    Open CAD Studio is a free open-source CAD. Install it, then run the ArchDev99 installer.

  2. Open a drawing

    Open a drawing in Open CAD Studio: the panel appears next to the CAD window and connects to it through the local API.

  3. Press a panel button

    Press the button you need, or start a wall with Ctrl+Alt+W. The panel does the rest.

Free vs Pro

FeatureFreePro
Axes✓ Yes✓ Yes
Walls✓ Yes✓ Yes
Doors and windows✓ Yes✓ Yes
Empty tables✓ Yes✓ Yes
Layers✓ Yes✓ Yes
Database✓ Yes✓ Yes
Rooms (4 buttons)— No✓ Yes
Schedule from blocks— No✓ Yes

Price

Pro: 2$ — 30 days

14 days of Pro free, starting from the first launch.

The free part works forever.

Payment: by card; the key arrives in Telegram or automatically

Open CAD Studio itself is free.

How to buy

  1. Copy the Computer ID

    Install ArchDev99, open Settings → License and copy the Computer ID.

  2. Pay and send the ID

    Pay by card and send the Computer ID to us on Telegram.

  3. Get the key and activate

    The key arrives automatically (License → "Get from the internet") or via Telegram. Paste it into the window and press Activate.

Renewal works the same way: the new key arrives automatically.

If you do not have Open CAD Studio yet, download it for free from Open CAD Studio.

News

All news →

Lessons

Lessons coming soon

FAQ

Which CAD does it work with?

Open CAD Studio. It does not work with AutoCAD: the panel connects to Open CAD Studio through its local API.

Setup shows "Windows protected your PC". What should I do?

Windows shows this warning because the program is not digitally signed. Click More info, then Run anyway.

Is internet required?

The free part works offline. Pro needs an internet connection at least once every 30 days. The trial also needs one connection the first time.

Does the key work on another PC?

No, the key is bound to the Computer ID. It keeps working after you replace a disk or the motherboard. After reinstalling Windows, contact us for a new key.

How does renewal work?

After payment a new key is prepared and the program fetches it from the internet by itself (License → "Get from the internet"). If you prefer, the key can also be sent on Telegram.

How long is the trial?

14 days from the first launch. During that time the Pro features work for free.

Contact

For questions, payment or keys, write to us on Telegram.

Message on Telegram