Keka - Keka is India's most desired HR & Payroll software. Keka's HR Payroll software help organizations create the best employee experience EVER! check for a free trial.
draw.io - Online diagramming application
BambooHR - Personalized HR software for SMBs
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.
greytHR - Essential HR Business Tools To Survive And Thrive
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.