Drawing Sequence Diagrams [closed]

Answer 1

For sequence diagrams you may also want to look at Visual Paradigm, quite a powerful tool.

Answer 2

The best software I've found and I usually use to make sequence diagrams from plain text is SDEdit. It's a Java tool, so you can use it in any operating system. And it's free software!

With this tool, you write the following:

#![SD ticket order]
ext:External[pe]
user:Actor
/order:Order[x]
db:TicketDB
acc:Account

ext:user.order a ticket!
user:order.new()
order:return=db.reserve(date,count)
db:return=acc.debit(cost)
acc:return=db.bonus(date,count)

to obtain this:

Answer 3

For sequence diagrams, you also might want to look at UMLGraph.

Update 2018-08-24: web page seems to have moved to here.