HeidiSQL offers a lightweight GUI to manage MariaDB, MySQL, SQL Server, PostgreSQL, SQLite, Interbase and Firebird. The tool lets users browse, edit data, and create tables, views, procedures, triggers and scheduled events. Export options include SQL files, clipboard or other servers.

Building the application requires Delphi 12.1 on Windows and the SynEdit component from the SynEdit project. FreePascal users must switch to the lazarus branch, but current compilers cannot compile HeidiSQL yet. After setting up the environment, developers compile resource files and load run‑time and design‑time packages.

Contributors can submit bug‑fix pull requests tied to existing tickets; new features are discouraged. Translations are managed through Transifex, and icons from Icons8 are licensed exclusively for this project. The application remains a solid choice for developers needing a cross‑database front‑end without heavy dependencies.