Many web workers have to use diagrams, charts and flowcharts to present information in a more advanced and organised way. Even for those in the tech jobs, nicely presented data can be the difference between cold calls and closed deals. However, many tools to create diagrams, charts and flowcharts can be complex to use, and may cost a lot.

To help those, here is a list of 10 free and easy-to-use web apps to create charts, diagrams and flowcharts. I hope you’ll find it useful, and if you do, please share it this article with your colleagues and friends. Also, don’t forget to leave me a comment below.

1. Gliffy

Free Plan is for 1 user, 5 diagrams, 2mb storage, public diagrams only.

2. Barchart

Barchart lets you create bar graphs online for your reports and presentations. To download the bar chart generated, simply right-click on the image and click on “Save As”.

3. CSS Chart Generator

If you want to know how powerful CSS can get when mixed with creativity, you must read this post. The CSS Chart Generator will generate graphs using CSS only. I highly recommend you try it at least once.

4. Grapher

I don’t think making bar graphs can get any easier. With Grapher, all you need to do is mark the labels on the axes, and use the arrows to change the bar height.

5. Hohli Charts

With Hohli Charts, you can generate dynamic charts in many design and formats.

6. Flowchart

Flowchart.com is an online multi-user, real-time collaboration flow charts service. You can collaborate with your colleagues in real-time. All collaborating parties can chat and design flow charts at the same time.

7. Online Chart Generator

This is possibly the only web app created on Google‘s Blogspot blogging platform. No, there are no API calls, iframes etc, but pure coding wonders.

8. DIY Chart

DIY (Do it yourself) Chart is a Web-based, simple and powerful online tool to create interactive charts and graphs from static or dynamic data which may be generated using any scripting language.

9. Cacoo

Cacoo is a user-friendly online drawing tool that allows you to create a variety of diagrams such as site maps, wire frames, UML and network charts. Cacoo can be used free of charge.

10. ChartGizmo

With ChartGizmo, you can create chart from static data or collect information from you page dynamically.