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DB Planner
Design your schema and your system, together.
DB Planner turns DBML into interactive ER diagrams and Mermaid into class diagrams and flowcharts, on one board your whole team edits in real time. Import SQL from Postgres, MySQL, or MSSQL. Export C# models, SQL, DBML, Mermaid files, or export the board as an image. There is also an MCP server, so your AI assistant can set up projects, edit schemas, and lay out the board for you. Start on the free plan, no card needed. Pro is $5, which lets you create an org, and added seats are $5 after.
Hey Product Hunt, I'm Cord. Colton and I are the makers of DB Planner.
DB Planner started as a DBML viewer and grey into a full system design board. The text stays the source of truth: you write DBML for the schema and Mermaid for the diagrams, and every table, class, and flowchart step becomes a card on one shared canvas. Drag anything anywhere, the source never changes.
What's on the board today:
Interactive ER diagrams parsed live from DBML, split across as many files as you like. References resolve across files with no import lines.
Mermaid class diagrams and flowcharts render as cards beside your tables. Frame and cross links can span both, so "this flowchart step writes to the orders table" is a sentence the board can finally say.
Real time collaboration with live cursors, presence, and shared editing in a proper built in code editor.
Import a SQL dump from Postgres, MySQL, or MSSQL. Export C# models, SQL, DBML, Mermaid, or export the board itself as an image. An image can be the whole board, just the schema, or just the diagrams.
Annotate everything with sticky notes, freehand drawing, arrows, shapes, text, and images on the board, plus table and column comments that live right in the DBML.
An MCP server, so Claude or Cursor can read your schemas, edit them, and even lay out the board.
A template marketplace, where you can start from a schema somebody has already worked out, or publish your own, sell it, and keep 90%.
Pricing is simple: a free plane (1 project, 10 files, no card needed), Pro at $5, which lets you create organizations, and added seats are $5 after.
Give it a try on the free plan and let us know what you think. We would love any feedback or questions.
Thanks for taking a look!
- Cord and Colton at DB Planner
About DB Planner on Product Hunt
“Design your schema and your system, together.”
DB Planner was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #99 on the daily leaderboard. DB Planner turns DBML into interactive ER diagrams and Mermaid into class diagrams and flowcharts, on one board your whole team edits in real time. Import SQL from Postgres, MySQL, or MSSQL. Export C# models, SQL, DBML, Mermaid files, or export the board as an image. There is also an MCP server, so your AI assistant can set up projects, edit schemas, and lay out the board for you. Start on the free plan, no card needed. Pro is $5, which lets you create an org, and added seats are $5 after.
On the analytics side, DB Planner competes within Design Tools, Developer Tools and Database — topics that collectively have 783k followers on Product Hunt. The dashboard above tracks how DB Planner performed against the three products that launched closest to it on the same day.
Who hunted DB Planner?
DB Planner was hunted by Cord Powell. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of DB Planner including community comment highlights and product details, visit the product overview.
Cord Powell
Hey Product Hunt, I'm Cord. Colton and I are the makers of DB Planner.
DB Planner started as a DBML viewer and grey into a full system design board. The text stays the source of truth: you write DBML for the schema and Mermaid for the diagrams, and every table, class, and flowchart step becomes a card on one shared canvas. Drag anything anywhere, the source never changes.
What's on the board today:
Interactive ER diagrams parsed live from DBML, split across as many files as you like. References resolve across files with no import lines.
Mermaid class diagrams and flowcharts render as cards beside your tables. Frame and cross links can span both, so "this flowchart step writes to the orders table" is a sentence the board can finally say.
Real time collaboration with live cursors, presence, and shared editing in a proper built in code editor.
Import a SQL dump from Postgres, MySQL, or MSSQL. Export C# models, SQL, DBML, Mermaid, or export the board itself as an image. An image can be the whole board, just the schema, or just the diagrams.
Annotate everything with sticky notes, freehand drawing, arrows, shapes, text, and images on the board, plus table and column comments that live right in the DBML.
An MCP server, so Claude or Cursor can read your schemas, edit them, and even lay out the board.
A template marketplace, where you can start from a schema somebody has already worked out, or publish your own, sell it, and keep 90%.
Pricing is simple: a free plane (1 project, 10 files, no card needed), Pro at $5, which lets you create organizations, and added seats are $5 after.
Give it a try on the free plan and let us know what you think. We would love any feedback or questions.
Thanks for taking a look!
- Cord and Colton at DB Planner