Open source alternative to Lucidchart and EdrawMax
Last verified
Create technical diagrams, flowcharts, and architecture maps in a browser or desktop app without vendor lock-in.
Use diagrams.net to document services, networks, cloud resources, deployment flows, and system boundaries in files that engineering teams can review and version.
Skip it if your team mainly needs freeform ideation boards with facilitation features.
Create flowcharts, BPMN diagrams, ERDs, and support diagrams for runbooks, onboarding docs, product specs, and incident reviews.
Skip it if your diagrams must live exclusively inside a paid collaboration suite.
Technical diagrams often become long-lived documentation artifacts, but many hosted diagramming tools keep them inside paid workspaces and proprietary collaboration systems. That creates friction when teams need offline access, repository-based documentation, data residency control, or a low-cost way for many contributors to view and edit diagrams. diagrams.net solves this by treating diagrams as portable files and supporting browser, desktop, and self-hosted workflows, so teams can place architecture maps and process diagrams beside the systems they describe.
Store diagrams as local files, Git-tracked assets, or documents in your own cloud storage instead of locking them inside a vendor workspace.
Use shape libraries and templates for flowcharts, UML, BPMN, entity-relationship diagrams, network maps, cloud architecture, and process documentation.
Run diagrams.net in the browser, use the desktop app offline, or host it internally for teams with network, privacy, or data residency requirements.
diagrams.net (formerly draw.io) is an open source diagramming tool and self-hosted alternative to Lucidchart, Microsoft Visio, and Miro for creating technical diagrams, flowcharts, and architecture maps.
vs Lucidchart: Lucidchart is a cloud-based SaaS tool with per-user monthly pricing and diagrams stored on Lucid's servers. diagrams.net stores files locally or in your own cloud storage (Google Drive, OneDrive, GitHub), with no per-seat fees and no data-residency concerns. Lucidchart has richer real-time multi-user collaboration and a polished UX, but diagrams.net covers the full range of technical diagram types, including UML, ERDs, BPMN, and network maps, at zero licensing cost.
vs Microsoft Visio: Visio requires a Microsoft 365 subscription and is Windows-centric, with files in a proprietary .vsdx format. diagrams.net is cross-platform, runs in any browser or as an offline desktop app, and stores diagrams as XML that remains readable without proprietary software. For teams outside the Microsoft ecosystem or those needing portable, vendor-neutral files, diagrams.net is the natural replacement.
vs Miro: Miro is an online whiteboard platform built for brainstorming, design sprints, and visual collaboration, with diagramming as one feature among many. It charges per editor and requires a persistent internet connection. diagrams.net is purpose-built for structured technical diagrams and can run offline or be self-hosted for air-gapped environments, making it the better fit for engineering and architecture documentation workflows.
Yes. The main draw.io repository is public on GitHub under the Apache-2.0 license, which allows commercial use, modification, and distribution under the license terms.
Yes. Teams can self-host diagrams.net for internal use, and individuals can use the desktop app for offline diagramming without sending files to a hosted workspace.
diagrams.net is most often compared with Lucidchart, Microsoft Visio, EdrawMax, and Miro when teams need technical diagrams without per-seat pricing or proprietary file storage.
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