Flowcharts are heart of any project. Not only it beautifies the presentation but also it organizes developments. Drawing flowchart in paint may be tedious and time consuming. Some web applications to draw may help you to get things done faster.
I have found two best sites for creating flowcharts online upon my personal experience.
Draw Any Where: Draw anywhere is nice flash based application for creating flow charts. Not only computer software based flow charts but it supports many types of flow charts and diagrams with cliparts. Moreover you can insert your image too.
Draw Any Where provides drag and drop interface. The site requires registration to create flowcharts but it is free. But if you want to try out them(not save file) they have provided demo.
Lucid Chart: Lucid Chart is also similar tool as above. The interface is smooth. Supports multiple tabs at once. They provide a free account if your requirements are not higher. This tool allows you to share the article online.
Along with flowchart the tool allows to create sitemap, network diagram and some other templates.
Some templates given on the site are impressive, can boost your site’s visibility.
The web is having many competitors. I have found some other websites too but they are not offering the service for free.