Eraser

Eraser is an AI diagramming and technical documentation workspace for engineering teams, with a Free plan, Starter at $15 per member/month billed annually or $20 monthly, Business at $45 per member/month billed annually or $60 monthly, and custom-priced Enterprise plans for larger organizations. It helps teams turn prompts, code context, and design notes into editable architecture diagrams, sequence diagrams, ERDs, cloud topology maps, wireframes, and Markdown-backed design docs without leaving an engineer-oriented collaboration canvas.

Eraser sits between a diagramming tool, a technical writing workspace, and an AI assistant. Its core value is that generated diagrams do not have to remain disposable first drafts: teams can keep refining them through a visual canvas, diagram-as-code, Markdown notes, comments, exports, and integrations with the documentation systems engineers already use. That makes it more practical for architecture reviews, RFCs, onboarding documents, incident writeups, implementation plans, and system design exercises than a generic whiteboard that treats the diagram as a standalone artifact.

The product is especially strong for software engineering workflows where a diagram needs to explain how services, APIs, databases, queues, cloud resources, deployment environments, or user flows connect. A backend team can draft a sequence diagram from a prompt, correct service names in diagram-as-code, attach implementation assumptions in Markdown, and share the result in Confluence or Notion. A platform team can document Kubernetes, CI/CD, auth, infrastructure, or threat-modeling diagrams and export them as PDF, PNG, SVG, or Markdown when the audience needs a static copy. A consultant can reuse technical diagrams across client environments while still adapting icons, labels, and architecture boundaries for each engagement.

Eraser is also shaped around collaboration and documentation hygiene. Files combine a single infinite canvas with notes, so written reasoning and visual structure can stay together instead of being split across a doc, a screenshot, and a separate drawing tool. Real-time collaboration, commenting, tagging, public links, private files on paid plans, version history, custom icons, and a large tech icon library make it easier to turn a quick diagram into a maintainable team artifact. The GitHub, Notion, Confluence, and VS Code integrations are important because they keep Eraser close to engineering review loops rather than isolated inside a design-only workspace.

Pricing starts with a useful but limited Free plan that is best for evaluation, small experiments, or occasional diagrams. Starter is the most natural paid entry point for active teams because it adds unlimited files, private files, more AI diagrams, API calls, and longer version history. Business is aimed at organizations that need SAML SSO, reference diagrams, more AI capacity, more custom icons, and unlimited version history. Enterprise extends that with custom pricing, flexible deployments, usage reporting, unlimited AI diagrams, customer success, and procurement options.

The main tradeoff is specialization. Eraser is not trying to replace Figma for high-fidelity product design or Miro for broad facilitation and workshop canvases. It is best when the audience is technical, the diagram needs to stay editable, and the final artifact belongs near engineering docs, code, or architecture review processes.