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Who Uses Delphi? The Silent Success Behind Astronauts, Theme Parks, Satellites, And A Multi-billion Ultimate Payday!

Who uses Delphi

Despite Delphi being regularly rated as one of the top ten development languages in the world, there’s still this weird, undeserved negativity (accidental or intentional) from some people who wrongly accuse it of being old or outdated. This is despite the fact that as you can see on our blog right now RAD Studio 12.3 has just been released. I’m not entirely sure what naysayers and doom-spreaders are worried about. They seem to claim, incorrectly, that Delphi is old fashioned – which is obviously incorrect, that it’s not updated – also untrue – didn’t I just mention version 12.3 of RAD Studio with Delphi and C++Builder is out now. Or they even ridiculously use the word ‘dinosaur’ in connection with Delphi when, in fact Delphi is the 4th newest language in the top ten index!

Delphi is in fact the 4th newest language in the top ten index of programming languages worldwide

Did you know that Delphi is actually the same age as Java and JavaScript? Delphi is also younger than Python, C++, and SQL

Even Java is only three months younger than Delphi. Moreover, JavaScript was released the same year as Delphi too.

JavaScript was released the same year as Delphi

Yet this weird kind of prejudice exists to try and “put Delphi in the corner” and claim it is a dinosaur when, in fact it’s newer than many other well-known programming languages and roughly the same age as most of the others in the top ten. What exactly are people scared of? Are they worried their friends might use Delphi and like it? Are they scared that the legendary tales of Delphi program’s rock-solid reliability, blinding performance, ability to create native apps which work on Windows, macOS, iOS, Android, and Linux with little or no dependencies might woo away unwary travelers taking their first footsteps on the technological path to success? I don’t get it.

Who uses Delphi? Well, quite a lot of people actually

The most fun fact about Delphi is that you have almost certainly interacted with a program written in Delphi today. If not today, then almost certainly in the past month. The reason for this is because of the sheer massive number of systems around the world which are written in Delphi. If you have been to an airport, watched TV, or traveled by train, then you may well have had Delphi doing its thing behind the scenes. Even if you did none of those things, 250 miles (400km) above your head at some point in the past week an astronaut looked down on you with eyes tested by a Delphi app running on a laptop computer in space.

You have definitely interacted with a Delphi program today or in the past few weeks

Just one Delphi app alone reaches 800 million people a year

Just one Delphi app, from AviaVox, broadcasts important safety announcements and travel information to no less than eight hundred million people worldwide a year in 35+ different languages (Source: Merijn Bosma, AviaVox). During the webinar I showed slides from Merijin as well as many other companies who either got in touch specifically to let me know they used Delphi or that I knew used Delphi in one way or another.

I had so many examples of people, products, and projects using Delphi I couldn’t include them all. Delphi is so good at being silently successful that it’s used everywhere you can think of and yet it doesn’t carry the unreliability of many competing technologies, or the instability and fragility of something like a script-based language or web-based technologies. It also has the raw computing power where, in the right hands, it can rival C++ and Rust yet remain far easier to understand and extremely straight-forward for new users to learn.

Delphi was chosen to power many aspects of Amsterdam's Schiphol airport 'new pier' project

Amsterdams Schiphol airport’s New Pier project uses Delphi behind the scenes to control many aspects of the project including passenger control, door access security and lots of others; reliably, with the minimum of fuss. Not bad a for a dinosaur.

Where can I see the replay of the “Who uses Delphi” webinar?

Here is the YouTube replay of the “Who uses Delphi” webinar – it’s also available on the Learn tab of the Welcome Page in the RAD Studio IDE along with all the other webinars.

Where can I get the slides for the “Who uses Delphi” webinar?

Here are the slides for the “Who uses Delphi” webinar.


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About author

Ian is the Embarcadero Developer Advocate, a professional writer, presenter, and host. He is a prolific software developer, voice actor, designer and poet. Ian is British American, born in London, now living in Dallas, Texas. "I get up early every day and write code".

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