10 successful applications developed with Delphi

10 successful applications developed with [Delphi](/services/delphi development)

Opened at: 1. April 2026 | Many developers wonder if Delphi is still being used for large, commercially successful projects today. The answer is a clear yes.

Although language no longer stands in the spotlight as in the 1990s, it is the driving force behind many known and business-critical applications.

Delphi shines especially where native performance, stability and rapid development time are crucial.

In this article we present 10 remarkable and successful applications built with Delphi.

These examples from different industries impressively show the versatility and performance of [Object Pascal](/performance/delphi development) and the Delphi-IDE.

1. Total Commander

A classic and vital for many power users on Windows. Total Commander is an orthodox file manager that goes far beyond the functions of Windows Explorer.

It is known for its incredible speed, stability and low resource consumption – all trademarks of a well-written Delphi application.

2. FL Studio

Opened at: 1. April 2026 | Many developers wonder if Delphi is still being used for large, commercially successful projects today.

When planning 10 successful applications built with Delphi from idea to delivery, Delphi Development, Cost Calculator: Delphi Development, Discover solutions sowie Cost Calculator: App Development offer practical next steps on our site.

One of the world's leading Digital Audio Workstations (DAW) for music producers. FL Studio is used by top DJs and musicians to produce hits.

The complex user interface with countless real-time audio effects and synthesizers was completely built in Delphi and proves the ability of language to create high-performed multimedia applications.

3. AIMP

Another proof of Delphi's strength in audio is the AIMP player.

This free audio player is known for its excellent sound quality, low system load and wide format support.

The entire application, including the powerful audio engine and the skinnable UI, is written in Delphi.

4. Inno Setup

Once you have installed software on Windows, the chances are high that you have interacted with an Inno Setup installer.

This widespread, free tool for creating installation programs is completely built in Delphi. It is a prime example of a stable and reliable tool used by millions.

5. Skype (the original Windows version)

Short: Yes, you've read correctly.

Yes, you've read correctly. The original, revolutionary voice over IP application that changed the world of communication was built with Delphi.

The native performance and the ability to interact directly with the Windows Network API made Delphi the ideal choice for the P2P architecture of Skype.

6. Embarcadero RAD Studio / Delphi IDE

A self-referential but impressive example: The Delphi IDE itself is written in Delphi.

This is a strong witness to the performance of the language – a complex, huge application that is used to

References and further reading

The following separate references complement the topics in this article:

• Bitkom – German digital industry association.
• German Federal Office for Information Security (BSI).
• European Commission – Digital strategy.
• MDN Web Docs (Mozilla)
• W3C – World Wide Web Consortium.

"AI in mid-sized companies works when processes are measurable and data is trustworthy—a pilot without a success metric is theatre."

— Björn Groenewold, Managing Director, Groenewold IT Solutions

Frequently Asked Questions (FAQ)

What is this article about: “10 successful applications developed with Delphi”?

This article sums up practical aspects of 10 successful applications built with Delphi for leaders and delivery teams. In short: Discover 10 impressive software applications.

Who benefits most from the content described here?

It is especially relevant for firms in Delphi that need reliable systems, clear interfaces, and predictable delivery — from mid-market teams to expert departments.

How does this topic fit into an IT or digital strategy?

You can map the topic to service building blocks such as custom software and delivery support. Architecture reviews and stepwise rollout reduce risk and rework.

For multi-system landscapes, IT consulting and architecture helps align vendors and internal teams.

What are sensible next steps if we need support?

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