draw.io is often used for structured diagramming, while Excalidraw is popular for free-form sketching. Your decision should depend on speed vs structure trade-offs.
If your team needs strict diagram notation and heavily structured outputs, draw.io can be a better default.
For brainstorming and low-friction communication, Excalidraw is often quick to start with.
Zenvias bridges the gap by offering reusable template workflows while preserving a fast whiteboarding experience for developers.