Claim this Profile is trying to work directly with this company to verify the accuracy of the information on this page. Thank you for your patience as we make sure we’re getting it right.

Are you a representative

of this company?

Claim this Profile

Dia Diagram Editor is free open source drawing software for Windows, Mac OS X, and Linux. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.


Top Ranked Companies

company logo
company logo
CADE chevron_right
company logo
Diagram Designer chevron_right

The Good

  • No Contracts or Cancellation Fees 
  • Free Software Usage 
  • Time in Business

No Contracts or Cancellation Fees 

Dia Diagram Editor doesn’t require a long yearly contract when you are using their software system. It is as simple as downloading their software to the approved device and enjoying more than 30 flowcharts, network diagrams, and database models they provide. Also, you don’t have to pay cancellation fees when you decide to delete this software on your device. 

Free Software Usage

The best things about Dia Diagram Editor is the free download to your approved device. Dia diagram is compatible with Windows, Mac OS X, and Linux. 

Time in Business 

Dia Diagram Editor have been providing its software to customers since 1999. Over the years they have improved their software based on the need and wants of their users. They have gained the trust and confidence of their customers by providing free and convenient software diagram systems.

The Bad

  • Customer Reviews 

Customer Review 

Many online reviewers have expressed their frustration with their software not being compatible with newer software devices such as OS X El Capitan. Before downloading this diagram editor you need to make sure your device is compatible with their software. It would be a good idea for Dia Diagram Editor to update their software to fit in the needs to newer electronic devices.

The Bottom Line

Dia Diagram Editor has been providing its services to the customers for almost 20 years. Customers enjoy their free services and stress free downloading process. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. However, outdated software might be a problem for some customers if they own newer electronic devices. 


As part of our service, we attempt to partner with all the companies that we review, and may get compensated when you click or call them from our site; however, regardless of any current, past, or future financial arrangements, companies listed on Best Company cannot buy their position, nor do we manipulate or inflate a company's ranking for financial gain. A company’s ranking is based on and calculated by an objective set of ranking criteria, as well as user reviews. See our How We Rank page for more information regarding our ranking algorithm.

All user reviews posted on Best Company are subject to screening and approval. We reserve the right to approve or deny any review posted to this site in accordance with our Review Guidelines. Best Company never suppresses user reviews—unless they are being investigated for authenticity, or if they violate our review guidelines. We encourage anyone who suspects a user review to be fraudulent or intentionally inaccurate to please notify our review moderation team.

User Reviews

Star Rating


0 Reviews

Review Breakdown

5 star
4 star
3 star
2 star
1 star

Sentiment Criteria

Value for your money
Quality of product or service
Customer service
Company trustworthiness
search cancel
Be the first to leave a review.