Delphi(Delphi XE6 - Delphi 10.4 Sydney)/Freepascal(trunk)/.NET (Windows/Linux/Android/MACOSX/IOS) library for logging on multi providers:

Files
Console
Memory
Email
Rest server
Windows EventLog

FireMonkey implementation for Linux
Start build UI Linux apps with Embarcadero Delphi and FmxLinux

InterBase (and FireBird) Data Access Components (IBDAC) is a library of components that provides native connectivity to InterBase and Firebird from Delphi and C++Builder including Community Edition, as well as Lazarus (and Free Pascal) on Windows, Linux, macOS, iOS, and Android for both 32-bit and 64-bit platforms. IBDAC-based applications connect to the server directly using the InterBase client. IBDAC is designed to help programmers develop faster and cleaner InterBase database applications.

MySQL Data Access Components (MyDAC) is a library of components that provides direct access to MySQL and MariaDB from Delphi and C++Builder including Community Edition, as well as Lazarus (and Free Pascal) on Windows, Linux, macOS, iOS, and Android for both 32-bit and 64-bit platforms. Applications based on MyDAC can connect directly to MySQL server or work through the MySQL client library. MyDAC is designed to help programmers develop faster and cleaner MySQL database applications.

FireMonkey implementation for Linux
Start build UI Linux apps with Embarcadero Delphi and FmxLinux

Google Places, Google Tasks, Google Calendar, Google Contacts, Windows Live Calendar, Windows Live Contacts, Outlook Calendar, Outlook Contacts, iCloud contacts, iCloud calendar, WebDAV, CardDAV, CalDAV .

dbExpress is a database-independent layer that defines common interface to provide fast access to SQL Server from Delphi and C++Builder, including Community Edition, on Windows and macOS (32-bit and 64-bit) and Linux (64-bit) platforms. For this server, dbExpress provides a driver as an independent library that implements the common dbExpress interface for processing queries and stored procedures. As data-access layer is thin and simple, dbExpress provides high performance database connectivity and is easy to deploy. You can use our driver in the same way as the one supplied by Embarcadero.

dbExpress Driver for SQLite is a database-independent layer that defines common interface to provide fast access to SQLite from Delphi and C++Builder, including Community Edition, on Windows and macOS (32-bit and 64-bit) and Linux (64-bit) platforms.

AlphaControls - a set of common and some unique components that support skins (AlphaSkins), as well as having some additional features. All skin elements can have their own properties for advanced drawing the gradient, realistic framework, semi-transparent and blurry shadows. Graphics functions produce all the calculations and drawing in real-time. Added property BoundLabel for editing elements. Handled various mouse events, which gives some additional features components. Manager prompts controls the tips in the application and gives them a beautiful view with a lot of settings that can be changed by a special designer. Analogs of standard components provide all the functionality and add a lot of new solutions to improve software quality and their appearance.

Seamless access to cloud services from FireMonkey applications. The TMS FMX Cloud Pack contains components that offer integration with several cloud services.