
UMLGraph
draw.io
Dia
yEd
LucidChart
OmniGraffle
UMLet
CollabNet
TaskDisplay
TasksBoard
Manage and visualize your Google shared tasks with a full screen for Google Tasks that is integrated with Google apps.
UMLGraph
TaskDisplaydraw.io - Online diagramming application
TasksBoard - Manage all your Google Tasks lists in the same board, and move your tasks from one list to another to order them easily.TasksBoard stays synchronized with Google Tasks on Gmail, Calendar, and Google Tasks mobile.
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
OmniGraffle - OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.