Microsoft Office Visio, draw.io, Lucidchart, SmartDraw, Mermaid, StarUML, Visual Paradigm, Gephi, Google Drawings, Gliffy, yEd Graph Editor, MindMeister, Freeplane, Graphviz, ArgoUML, Diagram Designer, ARIS Express, WhiteStarUML, Mindmaps, Linkurious, Diagramo, astah Community Edition, Umbrello, DotEditor, ProcessMaker, Webgraphviz, PathVisio, Neoclipse, ZenUML, ObjectAid, UML Designer, SequenceDiagram.org, BPMN Sketch Miner, Creately, Dynamic Draw, Violet UML Editor, Wirify, Mindomo, js-sequence-diagrams, Delineato Pro, Kroki, Mockingbird, Gaphor, blockdiag, WebSequenceDiagrams, PowerDraw, Grapholite, BOUML, MyDraw, Software Ideas Modeler, Spekfy, GenMyModel, BigHairyGoal, Papyrus UML, UMLGraph, Superus, PlantText, MindBranches, MockupTiger, textografo, Cacoo, Diagram.codes, GraphUp, Gravizo, Eclipse Mode Development Tools, jsUML2, Cubetto, Core2D, Poseidon for UML, Wireflow, viewflow, GoVisual Diagram Editor, System Designer, Vexlio, Graphity, Lovely Charts, my.origramy, TopCoder UML, Oqto Diagram, Iterop, MindBerry, Enterprise Explorer, Chrons Web Modeler, SwordSoft Layout, Aspose.Diagram for .NET, ProcessOn, Diagrammix, Theory Maker, Classbuilder, Syngraph.me, ckwnc, MyThoughts for Mac, hohli, Merge Plan, SEQO, EverGraph, yUML are some alternatives to PlantUML.