Delphi 10.3.1 Rio

The fastest way to build connected apps for Windows, Linux, Mac, iOS, Android, Gadgets, and Wearables

product box mockup DX Rio


Delphi is the nimble Object Pascal IDE and component library for cross-platform native application development you’ve come to expect. Write, compile, package and deploy enterprise grade, cross-platform native applications with flexible cloud services and broad IoT connectivity from the first IDE with integrated Windows 10 Desktop Bridge packaging. Compile native applications for Linux and Windows server and reach the widest audience with App Store support for Windows 10, macOS, iOS and Android - all from a single code base. Delphi 10.3 delivers update subscription customers a new Linux compiler and a host of community voted feature requests and RTL improvements.

With Delphi 10.3.1 Rio you get:

  • Create fast native apps for Windows, Mac and mobile from one codebase
  • Windows and Linux server support
  • Build 64-bit Windows applications and parallelize existing code
  • Bind any control to other objects or datasets with LiveBindings
  • Get universal enterprise database connectivity with FireDAC
  • Modernize Windows applications with new components and styles
  • Extend Windows apps with mobile and wearable companion apps
  • Access cloud based BaaS and REST services
  • Easily deploy stateless, restful, scalable, and secure turnkey middleware to mobilize Enterprise apps
  • Get a fast start and fast results 

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Embarcadero Delphi 10.3.1 Rio is the complete software development solution for rapidly building highly connected applications for Windows, Linux, Mac, iOS, Android, Gadgets, and Wearables

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RAD Server

RAD Server is a turn-key application foundation for rapidly building and deploying services based applications. RAD Server provides automated Delphi and C++ REST/JSON API publishing and management, Enterprise database integration middleware, IoT Edgeware and an array of application services such as User Directory and Authentication services, Push Notifications, Indoor/Outdoor Geolocation and JSON data storage.

A single server/single site deployment license of RAD Server is included with Delphi, C++Builder and RAD Studio Enterprise and Architect edition ($5000 value). Complimentary licenses can be purchased seperately.

Enterprise Connectors

Move, integrate, and analyze data with ease utilizing our NEW FireDAC Enterprise Connectors, powered by CData. These unparalleled components allow you to integrate 80+ Enterprise applications, simplifying connectivity into a standard model using SQL.

Data today is more decentralized than ever, not to mention difficult to access with the average company running upwards of 20+ SaaS applications, and at least as many on-premise applications. Make better business decisions, eliminate headaches and increase time to productivity by organizing vast amounts of data in an actionable format fast and efficiently with these drivers.

Enterprise Connectors is bought as a seperate product to be used with Delphi, C++Builder or RAD Studio.


Links with additional information

Alfasoft Delphi Trainings

Embarcaderos Events

Embarcaderos Awards

Embarcadero Community Forum

Embarcadero Help

Delphi Feeds

Data Sheet (PDF)

Delphi FAQ

Features Matrix (PDF)

Embarcadero - Who we are (PDF)



Buy Any License of Delphi, C++Builder or RAD Studio 10.3.1, Get a Free Training course.


Choose between:

Building Mobile Applications with FMX - Available starting 01-May-2019 - Live Sessions starting 11.00 AM CDT - On Demand thereafter ($999 Value):

The course is over 12 hours of training for existing Windows VCL developers who are new to mobile app development and FireMonkey. The course contains numerous labs that walk the student through building a mobile app from start to finish, with code to pull from and full source for a finished example app.

Embarcadero Academy Mastering Delphi 1yr Course Pass ($299 Value) + Object Pascal Handbook ($39 Value) + 20% Off Delphi Certification Exams

This course gives you online access to expert Delphi professional online training from renowned Delphi Experts for a full year. With your course pass, you can master a variety of core Delphi language and framework technologies and techniques to help you become a Delphi development master: Topics such as Delphi Interfaces, Generics, Reflection, RTTI, Anonymous Methods, VCL, Database development, Client dataset, XML, Generic Collections, and more! You’ll also receive Object Pascal Handbook by Marco Cantu ($39 value) and  20% off Delphi Certification Exams.


Terms and conditions of the FREE Online Courses

• Broadband Internet connection required to attend a course
• Bandwidth charges, if any, not included
• Course prerequisites include having the necessary software already installed
• Courses presented in English
• Upon purchase, you will receive a redemption code to be used on Embarcadero Academy (Mastering Delphi 1yr Course Pass)
• To redeem the Embarcadero Academy’s Mastering Delphi 1yr course pass, eligible customers may enter the redemption code during checkout at
• The codes are one-time use only.  The codes should be redeemed (to start the 1yr subscription) by 7/1/2019
• Offer limited to purchase of RAD Studio, Delphi and C++Builder Rio Professional, Enterprise and Architect Editions - new user or expansion
• Offer valid through April 30, 2019
• Course details will be delivered via email. Valid email address must be provided
• Embarcadero reserves the right to change, cancel or amend the offer at any time
• Offer void where prohibited by law
• Additional restrictions may apply


New Features

We are very excited to announce that Delphi, C++Builder and RAD Studio 10.3 Rio are now available.

This is one of the most significant releases yet, Rio introduces many new features in the IDE, making it more effective and pleasant to use, and significantly improves the users ability to build Windows 10 and multi-device applications. It also provides an updated RAD Server for developers’ micro-service architectures, C++ 17 for Windows 32-bit and great new enhancements to the Delphi language. These new features along with performance and stability improvements in all of the product areas make 10.3 Rio a version not to miss.

10.3 ide screenshot

Delphi 10.3.1 Features

-IDE Productivity Tooling: With Bookmarks, Navigator, and code minimap, developers can quickly move around their code, useful in large units; locate and remember important areas; and visually quickly scroll through their current code within the IDE
-Expanded support for iOS 12 and iPhone X series devices, addressing upcoming App Store requirements    
-RAD Server Console UI redesign and migration to the Ext JS framework, providing an enhanced user experience when viewing RAD Server API analytics
-Improved FireDAC support for Firebird 3.0.4 and Firebird embedded     
-HTTP and SOAP Client Library Enhancements on Windows     
-New VCL Windows and FireMonkey Multi-Device Styles for quickly updating the look and feel of an application    
-Fixes to over 150 customer-reported bugs

Delphi 10.3 Features:

New Language Features for Delphi
-The first additions to the Delphi language in several years, the new Delphi language features provide more flexibility when coding, and address top Delphi language feature requests from our power users. 

Extensive IDE Modernization
-RAD Studio 10.3 includes a new light theme and an updated dark theme, and an improved look and feel of the main window and several key dialogs for a more modern style with an emphasis on readability and usability for long periods of time.
-Significantly improved code completion for C++, providing better results for developer productivity, using a new asynchronous architecture to allow users to keep typing as results are calculated

Key Windows Enhancements
-With the new VCL High DPI ImageList control in 10.3, developers building VCL Windows applications can fully support multi-resolution, pixel perfect images on all controls, as well as any custom drawing requiring scaled images for multiple resolution monitors.
-We've also expanded the number of Windows APIs that VCL and FireMonkey developers can use in their applications, including a new ready-to-use component for enabling in-app purchases and trial mode in Windows 10 Store apps

Key FireMonkey Platform Enhancements
-Android Z-Order support in RAD Studio 10.3 provides support for FireMonkey styled controls such as buttons, labels, and checkboxes with natively rendered controls like the browser and map control on the same form.
-Native presentation for TCalendar, TEdit and TSwitch on Android for better user interface interaction and performance.
Developers can now build Android applications that meet Google’s new requirement of targeting API level 26 and iOS applications that support iOS 12

Expanded RAD Server Support
-Our multi-tier solution includes new ready to use components for mapping database queries to URL resources, offering direct response JSON production with no additional coding required by the developer. This also speeds up the process of building RAD Server backends for Sencha Ext JS web applications.

There has also been some exciting changes to the Architect edition, including a number of Idera portfolio products in the highest edition of our developer tools offering. Both Enterprise and Architect edition now also include an IBToGo deployment license for mobile.

All New Features in 10.3 (PDF)
See what´s New in 10.3 (video)


Tech. Requirements

Delphi 10.3 Rio System Requirements

Minumum Hardware Requirements
-1.6 GHz or faster processor
-2 GB of RAM
-Between 6 GB and 60 GB¹ of available disk space.
-11-capable video card that runs at 1024x768 or higher resolution

Operating System Requirements
-Windows 10
-Windows 10 Anniversary Update
-Windows 8 and 8.1
-Windows 7 SP1

Requirements for Supported Target Platforms

64-bit Windows - Either a PC that runs 64-bit Windows or a 32-bit PC connected to a PC that runs 64-bit Windows.

OS X - An Intel-based Mac with more than 2 GiB of RAM running any of the following versions of OS X:
-OS X 10.9 Mavericks
-OS X 10.10 Yosemite
-OS X 10.11 El Capitan

iOS - All requirements for OS X support.
-Xcode, version 6 or later.
 -Membership in the Apple Developer Program.

Android - An Android device that runs on an ARMv7 processor with NEON support.

Linux - 64-bit Linux running any of the following distributions:
Ubuntu Server (Ubuntu 14.04 LTS, 16.04 LTS and 18.04 LTS)
RedHat Enterprise Linux (version 7)


Embarcadero support and help can be found at following links:

Embarcadero Support
Delphi Resource Center

It is possible to buy support and mainteance to all Embarcadero products.