
Lightspeed
Toast
Heartland Retail
ITSCircle POS
Vantiv
QuickBooksPOS
StoreHub
Square helps millions of sellers run their business-from secure credit card processing to point of sale solutions. Get paid faster with Square. Sign up today!

draw.io
yEd
LucidChart
UMLGraph
PlantUML
OmniGraffle
CollabNet
Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

Which is more popular?
Based on our record, Square should be more popular than Dia. It has been mentioned 41 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | squareup.com | dia-installer.de |
| Company | Startup from the United States | Startup from Germany |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Square is recommended for small to medium-sized businesses, especially in the retail, food and beverage, and service industries, who need a versatile and scalable payment processing and business management solution. It is particularly beneficial for those who prefer a cloud-based service with seamless integration across multiple devices.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Square vs PayPal 2020: A Side by Side Comparison
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Square and Dia. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


If your business needs to process payments in person, Square has handy point-of-sale features like a contactless chip reader, magstripe reader, and convertible stand. All these components let you take payments...
If your business mainly processes card payments in-person in a retail setting, needs a few basic business tools like inventory tracking and sales reports, and is looking for something that seamlessly integrates with...
Square is another big name in retail payments and for a good reason. The easy-to-use platform lets you accept payments online or in-store. There are also useful available features such as invoices, contactless...
UI of Dia is not the best in the world. The icons have very low resolution, it does not have support for screen resolutions higher than 1080p so that users of large and Ultra wide monitors could have problems.
Dia is a downloadable program that works with Windows and is a great way to make charts and diagrams just like with Visual Paradigm. The desktop tool provides different elements to make your chart more accurate. The...
Dia is a full-featured diagramming program which is licensed under GPL. It allows you to draw various types of diagrams and has special objects to help you to draw ER diagrams, UML diagrams, flowcharts, network...
Recommendations tracked on public social media and blogs since March 2021.


This is an advertisement and I want to provide all the details.. I am a software developer and avid traveler. I own this website and am the sole developer who wrote the entire software! This idea came about when I signed up for Global... Source: over 3 years ago
And now with Square it's dirt simple to accept credit card transactions, and the software even integrates into the NFC transceiver in modern iPhones--so even street vendors and local artists accept contactless payment cards. Source: almost 4 years ago
Https://squareup.com/us/en - Better with aged account and/or verified business. Do custom amount charges on phone and type in card info manually. Source: almost 4 years ago
First thing that come to my mind Dia Diagram Editor (http://dia-installer.de/). - Source: Hacker News / over 1 year ago
I used GIMP (https://www.gimp.org) and Dia Diagram Editor (http://dia-installer.de) I can't say I was very happy with either for what I was doing (laying out mount points for solar panels) FreeCAD (https://www.freecad.org) looks like a... Source: over 3 years ago
Perhaps the old Dia (works on W10). There's a portable version on Portableapps.com. Source: over 3 years ago
When comparing Square and Dia, you can also consider the following products.

Retail point-of-sale, inventory management, and omnichannel payment processing systems.
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Built to make restaurants better. Toast gives your restaurant the technology you need to succeed in today's fast-paced environment.
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yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
Compare yEd to Square or Dia:

Heartland Retail (previously Springboard Retail) POS software a robust, user-friendly cloud point of sale solution designed for the business of retail. A complete retail management platform built for growing single, multi and franchise brands.
Compare Heartland Retail to Square or Dia:

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Compare LucidChart to Square or Dia: