The following is a list of free Delphi libraries, utilities and examples with full source code available from WinSoft. Many are Windows specific, but there are some Android specific ones too. A lot of really useful code here. Thanks to Erik Salaj.
Update: These links are broken, but you may find some of them on Internet Archive.
- .NET Framework Detect – Shows versions of .NET Frameworks installed on your computer. Available free with full source code.
- AutoRun – Suppresses AutoRun programmatically
- AWE – Address Windowing Extensions (AWE) for Delphi allows your applications to quickly manipulate physical memory greater than 4GB.
- CodePages – Delphi library for text conversion between different code pages.
- Create GUID – Creates and shows GUID, a unique 128-bit integer used for CLSIDs and interface identifiers. Available free with full source code.
- Create PDF for Android – Does exactly that.
- CPU Speed – Measures the speed of the computer processor.
- DAO Detect – Shows DAO (Data Access Objects) and ACEDAO (Microsoft Access database engine Data Access Objects) versions installed on your computer
- Device Info for Android – Info like CPU, Brand, etc.
- Enum Drives – Enumerates available disk drives.
- Enum Net – Enumeration of network resources or existing connections.
- Enum Processes – Enumerates the current processes in the system.
- File Version – Shows version information for the specified file.
- Folder Path – Shows paths of special folders.
- IP Address – Shows the Internet Protocol address of your computer.
- Location for Android – Detailed location information including providers
- MAC Address – Shows the MAC (Media Access Control) address of network adapters installed in your computer.
- MDAC Detect – Shows version of MDAC (Microsoft Data Access Components) installed on your computer.
- Memory Status – Shows information about the system's current usage of both physical and virtual memory.
- Monitor Off – Turns your screen off
- OS Version – Microsoft Windows Version information
- Path Edit – Multiline editor for PATH environment variable.
- Restart – Restarts Windows
- Ringtone for Android – Shows working with Ringtones on Android
- Sensors for Android – Sensor example for Android
- SpeechRecognizer for Android – Example working with Speech Recognition on Android
- System Timing – Shows system idle, kernel and user time. Values are the sum of the designated times across all CPU cores.
- TextToSpeech for Android – Converts text to speech on Android.
- ToneGenerator for Android – Generate Tones on Android
- UTF-8 – Converts strings and widestrings from/to UTF-8.
- Vibrator for Android – Example of working with the Vibrator API on Android
- WMI View – Shows Windows Management Instrumentation data.