Eraser is a diagramming and documentation tool built around how engineers actually think: describe a system in plain English or paste code, and its AI generates architecture diagrams, sequence diagrams, and flowcharts automatically, alongside a collaborative canvas for technical docs.

Its DiagramGPT feature turns a text description or existing code into a clean technical diagram in seconds, dramatically faster than manually dragging boxes and arrows in general-purpose tools. Beyond diagrams, Eraser combines a Notion-style docs editor with diagramming on the same canvas, so architecture decisions, sequence flows, and the reasoning behind them live in one document rather than scattered across a wiki and a separate diagramming tool. Git-style version history and team collaboration round it out for engineering-org use.

Who is it for?

Software engineering teams documenting system architecture, and technical writers who need diagrams generated from descriptions rather than drawn by hand.

How much does Eraser cost?

A free tier covers individual use with limited diagrams. Team plans start around $6 per user per month with unlimited diagrams and collaboration features, scaling for larger engineering orgs.

Our verdict

Eraser's AI-generated diagrams from plain text or code is a genuine time-saver engineers actually adopt, and pairing docs with diagrams in one canvas beats the usual wiki-plus-separate-tool split. For engineering documentation specifically, it is one of the best-targeted AI tools available.