Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
Nintex - Cloud-based digital workflow management automation platform