Calamari - Calamari helps organizations, companies, and enterprises to manage their human resources in an easy and compliant way by delivering modern and easy-to-use time tracking and attendance management tools.
draw.io - Online diagramming application
Sage HR - Sage HR is a one-stop shop for your HR management needs. Your HR - simplified!
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.
TimeOffManager - TimeOffManager.com provides a fully automated online system for tracking and managing employee absence, leave, paid time-off and attendance.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.