1. SmartDraw
SmartDraw provides an intuitive interface for creating scaled 2D drawings. Here are some key features:

Templates: Start with built-in CAD templates and drag-and-drop symbols.
Dimension Control: Easily set the size of walls or objects by typing dimensions.
Symbol Library: Access a vast collection of mechanical engineering and architectural symbols.
Print to Scale: Choose standard architectural scales or custom scales.
Collaboration: Share your drawings with team members using Microsoft Teams, Google Workspace, or other collaboration tools.
Learn more about SmartDraw here.

2. DrawSpaces
DrawSpaces offers a free online 2D CAD drawing platform. Key features include:

Editing and Viewing: Create, edit, view, and markup 2D and 3D DWG files.
User-Friendly Interface: No need to download any software; work directly in your browser.
Import DXF Files: Easily import existing designs.
Save and Share: Save your designs and share them with others.
Explore DrawSpaces here.

3. eMachineShop CAD Online
eMachineShop’s browser-based CAD tool is ideal for designing and ordering parts. Here’s what it offers:

2D Browser CAD: Design parts without downloading any software.
Import DXF Files: Bring in existing designs seamlessly.
Save and Share: Save your work and collaborate with others.
Try eMachineShop CAD Online here.

4. Onshape
Onshape is a powerful cloud-based CAD platform. While it offers 3D capabilities, it also excels in 2D drawing. Features include:

High-Quality Drawing Views: Create 2D, 3D, exploded, and rendered drawings.
Standard and Custom Views: Customize your drawing views.
Collaboration: Work with teams and share comments within the platform.