LightSaber is a comprehensive open-source Delphi library with over 15 years of development. A lightweight alternative to the Jedi library — simple, fully commented, no external dependencies. Supports both VCL and FMX frameworks.
Currently at 135+ stars on GitHub. Also available via the Delphi GetIt Package Manager.
For an in-depth guide, see Book 3: Libraries & Packages in the “Delphi in All Its Glory” series.
What you can do with this library
- Save/restore your entire GUI — checkboxes, radio buttons, edit boxes — to disk with 3 lines of code
- Auto-translate your GUI to multiple languages via DeepL (zero extra code)
- Logging — color-coded messages with auto-popup on errors
- AppData — a dramatically improved TApplication: RunningHome, RunningFirstTime, BetaTesterMode, SingleInstance, LastUsedFolder, and much more
- 80+ visual controls — drag and drop at design time
- Image processing — open/convert/resize BMP, PNG, GIF, JPEG2000, with alpha support
- Internet — downloads (Indy, WinInet), email, HTML utilities
- Binary I/O — extended stream classes with ReadString, WriteBoolean, endianness handling
- App lifecycle — self-restart, self-delete, run at startup, uninstaller, tray icon
Library architecture
7 packages organized in layers. Each layer depends only on layers above it. Use just the Core, or the full stack.
| Package | Description |
|---|---|
| LightCore | Platform-agnostic RTL (strings, I/O, logging, binary, streams) |
| LightVcl.Common | Windows utilities (registry, shell, dialogs) |
| LightVcl.Internet | Downloads, email, HTML |
| LightVcl.Graphics | Image processing, GDI, effects |
| LightVcl.Visual | 80+ visual components, AppData, TrayIcon |
| LightFmx.Common | FMX utilities, AppData, styles |
| LightFmx.Visual | FMX visual controls |
Get it
- GitHub: github.com/GabrielOnDelphi/Delphi-LightSaber — full source, demos, 160 unit tests
- GetIt: Install directly from the Delphi IDE
- Minimum Delphi version: 12.3+
Freeware. Click the Star button on GitHub if you find it useful — my motivation is directly proportional with the number of stars.