DataDocs vs DbSketch

DataDocs is a cloud database documentation tool that uses AI to generate documentation and keep it aligned with schema changes. It currently supports PostgreSQL and MySQL; SQL Server and Snowflake are listed as coming soon. One-click generation creates documentation, while search covers the documentation and data catalog. DataDocs scans for schema changes and reflects them in the documentation. If an asset’s documentation is wrong, users can regenerate it and provide feedback; manual editing is listed as planned. The service requests read-only metadata access and says it does not access or store the database’s actual data. Its web application and extraction service run in separate VPCs, with credentials stored in a restricted vault. DataDocs is aimed at small businesses, freelancers, and agencies, and is positioned as documentation software rather than data governance. The Free plan is free for one source, 25 assets, and weekly refresh. Growth costs $25 a month; Premium costs $100 a month.

DbSketch is a command-line generator for turning live relational database schemas into version-controlled documentation. It reads tables, columns, primary keys, and foreign keys from SQL Server, PostgreSQL, MySQL, and SQLite. Output choices are Graphviz DOT, Mermaid ER, or Markdown files with diagram text in a fenced code block. A YAML configuration holds one database connection and can define named diagram targets, allowing one setup to produce multiple focused diagrams with separate output and renderer settings. DbSketch can include native database comments where supported and apply YAML comment overrides. Its DOT renderer preserves foreign-key relationships down to the connected columns. The maker describes it as useful for repository documentation, CI, and compact schema snapshots for people and AI coding assistants. It is distributed as the.NET tool DimonSmart.DbSketch, which installs the dbsketch command; the getting-started guide requires the.NET 10 SDK. The software is MIT-licensed and costs nothing. It runs on Linux, macOS, and Windows and is self-hosted.