Web Sequence

UML Diagram Editor converts TEXT to Sequence Diagrams. It accepts C-like pseudo code and produces sequence diagram as you type in. 
Get started:
https://medium.com/@JakeXiao/zenuml-basic-example-98afa8818d5b

Update in 0.9.19/0.9.20
1. // comments

Update in 0.9.18:
1. var a = new DomainModel()

Update in 0.9.16:
1. Fixed a defect in a->b->a-b

Update in 0.9.14/0.9.15:
1. Updated layout for nested fragment.

Update in 0.9.13:
1. Updated logo.

Update in 0.9.11/12:
1. Support @Starter(AnyUser)
2. Support class mark (:A or a:A)

Update in 0.9.10:
1. Support 'return' ( aResult = A.method() )

Update in 0.9.9:
1. Support customizing style with CSS.

Update in 0.9.7:
1. Fixed a problem - not able to export image. Thank you Juan for reporting.

Update in 0.9.6:
1. Updated logo;
2. Added help page (at left-bottom).

Update in 0.9.3/4/5: 
1. Fixed scrolling issue;
2. Added handwriting fonts and imperfect box style.

Examples:
1. Call a method: 
   service.getBooks()
2. Conditional branch: 
   if (x) { 
      service.getBooks() 
   }
3. Loop:
   while(y) {
     service. getBooks() 
   }