Eraser (DiagramGPT)

Leading#1 in SaaShigh confidence
The top pick for technical diagrams — architecture, system design, ERDs and sequence flows generated from a text description.
Open Eraser (DiagramGPT) ↗See all SaaS
Our read

Why it ranks #1

Placed #1 in both Dupple's tested 2026 list and Toolradar's 2026 ranking, and appears in all three cited roundups; reviewers consistently single out its architecture, ER and sequence-diagram focus over general whiteboards.

Here is the catch

the 3-file free cap is restrictive for ongoing work
40 monthly AI credits on Starter can run out quickly during iteration
technical focus and diagram-as-code workflow are less suitable for casual business diagrams

Does this well

reviewers rate it the strongest specialist for technical and architecture diagrams
keeps diagrams, Markdown notes and version-controlled source in one engineering workspace
3,000+ technical icons and editable AI output reduce cleanup for system designs

Pricing

Model
Freemium (paid from ~$10/user/mo)
Free plan
Free: 3 files, 3 AI credits, 7-day version history, unlimited guests
Entry paid
Starter $15/member/mo billed annually ($20 monthly) — unlimited files, 40 AI credits and 90-day version history
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.

Key features

prompt-to-architecture, ER and sequence diagramseditable diagram-as-code on an infinite canvasMarkdown technical documents beside diagramsGitHub, Notion, Confluence and VS Code integrations

Sources we read

Quick facts

Route
SaaS
Standing
leading · #1
Pricing
Freemium (paid from ~$10/user/mo)

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