draw.io is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. No login or registration are required and features include the ability to save locally (including svg), a range of stencils, .vsdx, Lucidchart and Gliffy import and real time diagram sharing.
- It's just an illustration program with flowchart shapes!
- Better than Visio is, and the bets part is, both online and PC program is amazing
- It's free, ease of use, I can use it online