Comparison
Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) vs Excalidraw Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) and Excalidraw both land on Worth it.
app.diagrams.net
Buy if you want capable free diagramming . flowcharts, UML, ER, BPMN . with zero budget risk; skip if you need real-time team collaboration or polished templates, where paid rivals win.
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excalidraw.com
Buy the free, open-source version for quick diagrams and sketches . it costs nothing and reviewers love it.
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Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) versus Excalidraw Compare Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) Excalidraw Verdict Worth it Worth it Best for Engineers sketching UML and architecture Quick sketches and wireframes Who it's not for Teams wanting real-time collaborative whiteboarding (Guess: Miro fits better) Enterprises wanting Miro-style workshop templates and facilitation Privacy No known public vulnerabilities found in the sources reviewed. Open-source with past medium-severity XSS CVEs; Excalidraw+ adds SOC 2 certification and E2E encryption. Support quality No evidence found No support evidence in sources Public sentiment Users repeatedly name among the best free diagramming tools on Quora and LinkedIn; the main complaint found is an occasional file-opening bug. Users love Excalidraw for quick, effortless sketching and rate it around 4/5, with minor gripes about scaling and drawing-tool limits. Biggest gotcha File-open bugs reported (.drawio stuck); export backups regularly. Excalidraw+ ($7/mo) needed for team persistence and workspaces; free version stores locally
Pick Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) whenEngineers sketching UML and architecture Zero-budget teams and students Visio users migrating .vsdx files Solo process and ER diagramming When Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) is not a fitTeams wanting real-time collaborative whiteboarding (Guess: Miro fits better) Polished client-facing graphics needing premium templates Buyers requiring vendor support, SLAs, or contracts Anyone needing auto-generated diagrams from live codebases Pick Excalidraw whenQuick sketches and wireframes Dev teams diagramming architecture Students and teachers Obsidian note-takers via plugin When Excalidraw is not a fitEnterprises wanting Miro-style workshop templates and facilitation Polished, precise engineering diagrams . draw.io fits better Teams needing SOC 2 on the free tier . that's paid-only Buyers wanting vendor SLAs from a tiny bootstrapped team Sources official security review review review official review review review review review review official Excalidraw+ Pricing plus.excalidraw.com official official official Read the full reports
Read the full Flowchart Maker and Online Diagram Software (draw.io / diagrams.net) report
Read the full Excalidraw report