Enterprise
- SQL Server: https://commons.wikimedia.org/wiki/File:Microsoft_SQL_Server_2025_icon.svg
- Oracle Database: https://commons.wikimedia.org/wiki/File:Oracle_logo.svg
- IBM Db2 (Carbon icon): https://commons.wikimedia.org/wiki/File:Carbon_Icons_(IBM)_32_ibm–db2.svg
- SAP HANA (SAP logo): https://commons.wikimedia.org/wiki/File:SAP_2011_logo.svg
Open Source
- PostgreSQL: https://commons.wikimedia.org/wiki/File:Postgresql_elephant.svg
- MySQL: https://commons.wikimedia.org/wiki/File:MySQL_textlogo.svg
- MariaDB: https://mariadb.com/about-us/logos/
- SQLite: https://commons.wikimedia.org/wiki/File:SQLite_Logo.svg
Cloud-Native Managed
- Azure SQL Database icons: https://learn.microsoft.com/azure/architecture/icons/
- Amazon Aurora icons: https://aws.amazon.com/architecture/icons/
- Google Cloud SQL icons: https://cloud.google.com/icons
- Amazon Redshift icons: https://aws.amazon.com/architecture/icons/
Specialty SQL
- Snowflake: https://commons.wikimedia.org/wiki/File:Snowflake_Logo.svg
- Teradata: https://commons.wikimedia.org/wiki/File:Teradata_logo_2018.svg
- Vertica: https://commons.wikimedia.org/wiki/File:Vertica-OT.svg
- CockroachDB: https://www.vectorlogo.zone/logos/cockroachlabs/index.html
- Google Cloud Spanner icons: https://cloud.google.com/icons
Embedded or Lightweight
- FirebirdSQL: https://www.firebirdsql.org/en/logos/
- H2 Database: https://cdnlogo.com/logo/h2_50975.html
- Apache Derby: https://db.apache.org/derby/logo.html