ChartGizmo – free online charts creation tool

ChartGizmo – chart software for visualizing your data. You can create charts and place them on your website, blog and social network profiles. Create chart from static data or collect information from you page dynamically. ChartGizmo is absolutely free. Types of diagrams: pie, bar, line. You can customize all chart settings. Different sources of data: [...]

Litha-Paint – free HTML+Javascript vector graphic editor.

Litha-Paint alows you to create and share vector graphics using only a browser. You can store your work in your remote home directory.
Litha-Paint is a free HTML+Javascript vector graphic editor.
It doesn’t depend on browser-side plugins such as Flash and doesn’t depend on browser specific things such as VML or SVG.
Using Litha-Paint you are able to:

draw [...]

Gliffy is easy, free, and fun!

Instant diagrams in your web browser
Diagramming in your web browser without downloading additional software
Desktop application feel in a web-based diagramming solution
Add collaborators to your work and watch it grow
Link to published Gliffy drawings from your blog or wiki
Create many types of diagrams such as Flowcharts, UI wireframes, Floor plans, Network diagrams, UML diagrams, or any [...]

Cumulate Draw online drawing tool

Draw diagrams, charts, floorplans and electronic circuit online with Cumulate Draw
Cumulate Draw are useful for replacing “hundreds of dollars” drawing software, which is ridiculous, but it does have a lot of potential for putting together simple drawings and flow charts. You can save your Cumulate Draw drawings as a JPEG, PNG, SVG, PDF, or use [...]