Free Sentence Diagrammer

The vector stencils library "Sentence diagrams" contains 18 shapes for drawing sentence diagrams or parse trees.
"In pedagogy and theoretical syntax, a sentence diagram or parse tree is a pictorial representation of the grammatical structure of a sentence. The term "sentence diagram" is used more in pedagogy, where sentences are diagrammed. The term "parse tree" is used in linguistics (especially computational linguistics), where sentences are parsed. The purpose of sentence diagrams and parse trees is to have a model of the structure of sentences. The model is informative about the relations between words and the nature of syntactic structure and is thus used as a tool to help predict which sentences are and are not possible." [Sentence diagram. Wikipedia]
The shapes example "Design elements - Sentence diagrams" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Language Learning solution from the Science and Education area of ConceptDraw Solution Park.