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Best Free Alternatives to Gliffy 10.x (2025 Edition)
Stop paying $8.00 - $10.00/user/mo. Discover professional-grade tools that won't break your budget.
Category: Diagrams / Visual CollaborationVerified for 2025
Top Recommended Replacements
Draw.io (diagrams.net)
FREETop Professional Free Alternative
Why we like it
100% free; native desktop app; works entirely offline; allows for manual data residency control; massive community-driven shape libraries.
Keep in mind
Lacks the 'Zero Egress' automated compliance and the deep, native-macro search integration found in Gliffy's Atlassian Forge build.
Eraser
FREEBest for AI-Native Developers
Why we like it
Built for 'Diagrams-as-Code'; features a powerful AI Copilot for generating system architectures; exceptionally fast and minimalist UI.
Keep in mind
Focused strictly on technical/developer workflows; lacks the broad business process (BPMN) and floor-plan templates of Gliffy.
Pencil Project 3.x
FREEBest for Local Wireframing
Why we like it
Great for low-fidelity mockups and UI prototyping; completely free; supports custom stencil collections; works as a standalone desktop app.
Keep in mind
Lacks real-time collaboration and modern AI features; interface feels dated compared to 2025 cloud-native editors.
Mermaid Chart
FREEBest for Text-to-Diagram Purists
Why we like it
Uses markdown-like syntax to generate diagrams; perfect for Git-based workflows; Gliffy now allows you to import these and convert them to editable shapes.
Keep in mind
The visual 'drag-and-drop' editing is secondary to the code-based approach.
Miro
FREEBest for Brainstorming
Why we like it
Infinite collaborative whiteboard; the 2025 'Innovation Workspace' features turn sticky notes into diagrams instantly; superior for non-technical team workshops.
Keep in mind
Not a specialized technical diagrammer; can become cluttered when used for complex UML or database schema mapping.
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