Dia vs Eraser
Dia
dia-installer.de
Eraser
eraser.ioSide by side
| Figure | Dia | Eraser |
|---|---|---|
| Price from | Free | $15/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 4 |
| Spec score · Diagram Software | 7.7 (#27) | 9.1 (#3) |
| Spec score · Diagramming Software | 7.7 (#37) | 9.1 (#3) |
| Spec score · Diagramming tools | 7.2 (#41) | 9.1 (#4) |
| Diagram types | Entity-relationship diagrams; UML diagrams; flowcharts; network diagrams | The documented diagram-as-code types are flow charts, entity-relationship diagrams, cloud architecture diagrams, sequence diagrams and BPMN diagrams. |
| Free plan | Yes | Yes |
| Support | For problems, the site directs users to its FAQ and Dia bug reports. | The Enterprise plan includes a customer success manager, and security reports are available under NDA. |
Plans
In their own words
Eraser
Eraser is a diagramming tool for technical teams that generates diagrams from prompts, code, files, and private Git repositories. It supports flow charts, entity-relationship diagrams, cloud architecture diagrams, sequence diagrams, and BPMN diagrams. Generated diagrams can be adjusted with diagram-as-code or AI edits, and reference libraries can align output with company building blocks. Collaboration includes real-time work, comments, tagging, and unlimited free guests. The service lists GitHub, Notion, Confluence, and a VS Code extension, as well as live diagram embeds and Git-powered updates. The free plan includes 3 files, 3 AI diagrams, and 7-day version history. Starter costs $15 a month when billed annually, or $20 monthly; it adds unlimited files, private files, and API calls. The diagram API is for paid users, while MCP operations are subject to plan AI-credit limits. Eraser says it is SOC 2 Type 2 certified, performs annual penetration testing, and does not train AI models on customer content. Enterprise deployment options include multi-tenant, single-tenant, and self-hosted setups.