Delphi, C++Builder & RAD Studio
Localization
Localize VCL and FireMonkey applications. Translate with AI. Switch languages without restarting.
Fully functional trial. Your IDE must stay running while your localized application runs.
One localization workflow
Work with your application’s real texts and structure. Give AI the context behind each string.
Change the application language instantly, without restarting. In VCL and FireMonkey.
Keep translations in SIL/SIB files. Add languages or fix a translation without recompiling.
Real Form Preview
Give translators the context they need. SIL Editor shows the real layout in their language and highlights texts that are tight or too long.
Free for your translators, too.
Real form. Real translations. Visible layout issues.
Explore every feature with the fully functional trial.
Keep your IDE running while your localized application runs.
From your first form to your next release
01
Drop a component onto your form, or let TsiLang Expert add it to every form in your project.
02
Translate manually or with AI in the Translation Editor. Or share the free SIL Editor with your translators.
03
Let users choose their language without restarting. With external files, add more languages without a new build.
Built for your existing code
From Delphi 5 and C++Builder 6 to the latest RAD Studio. Localize applications for Windows, macOS, iOS, Android and Linux.
Building for iOS requires the Full Source edition.
AI, with application context
Translate cells, rows or entire languages with ChatGPT, Gemini or Claude. Context/Category notes explain where your strings are used.
Prefer an AI coding assistant? Connect through the MCP server and review translations before they are saved.
What developers say
“
No line of code anymore to implement a multilingual interface. And of equal importance: the support is great!
Dirk VanhaeckeProgrammer, ADMB, Belgium
“
It took less than a day’s work to change over all translations in a 70 forms application with TsiLang… Worked seamlessly and the auto translation is a great feature!
Eric DeghayeGeneral Manager, WNP sprl, Belgium
“
TsiLang is a great component – good value too – an elephant for the price of a mouse.
Michael BradberySoftware Developer, TransGrid, Australia
Learn at your own pace
01 / WATCH
Watch practical examples and a full application localization demonstration.
02 / READ
Explore how to deliver applications that users can translate themselves.
03 / DISCOVER
Real Form Preview in SIL Editor and AI assistant tools in TsiLang Expert.
The trial is fully functional for evaluation. RAD Studio, Delphi or C++Builder must remain running while your localized application runs. The registered version removes this requirement. Your work is kept when you register.
TsiLang supports the latest RAD Studio and versions back to Delphi 5 and C++Builder 6, with VCL and FireMonkey support. Check the current compatibility details before installing.
No. SIL Editor and Dictionary Manager are free for developers and translators. You can distribute SIL Editor to translators and end users to work with SIL/SIB translation files.
Both editions include all features. Binary Only provides compiled units; Full Source also includes the source code. Choose Full Source if you build FireMonkey applications for iOS. Licenses are per developer.
Your license never expires. One year of updates is included, and versions you have received keep working after that year. Both automatic renewal and one-time purchase options are available.
Your app’s next language starts here
Try TsiLang with your own forms, strings and workflows.
Fully functional trial. Keep your IDE running while your localized application runs.
Learn & connect
© 1998–2026 Igor Siticov, SiComponents. TsiLang®, Resource Builder® and SiComponents® are registered trademarks of Igor Siticov.
RAD Studio, Delphi and C++Builder are trademarks and/or registered trademarks of Embarcadero Technologies, Inc.
