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.
- Draw.io is very usable, with a sleek interface, tons of stencils/shapes, and the ability to export to various file formats. I have used for home and work projects and have been pleased with the results. I would even go as far as saying it's more useful than MS Visio if your requirements aren't too technical.
- Easy to use, No registration(!), complex feature set, very few bugs. Acceptable performance.
- Easy to use. Free and open source. can install on my pc (linux mint) Better application than Dia, that I can use online as well on my PC. Very Good !