# ChartDB vs Database Sample

ChartDB records 49,523 monthly visits with -33.4% month-over-month growth and Freemium pricing. Database Sample records 35,340 monthly visits with +69.1% growth and Freemium pricing.

| Metric | [ChartDB](https://openaitools.app/tool/chartdb) | [Database Sample](https://openaitools.app/tool/open-source-database-designs) |
| :--- | :--- | :--- |
| Website URL | https://chartdb.io | https://databasesample.com |
| Categories | AI Diagram Generator, AI Developer Tools, AI Design Generator, Open Source AI Models | AI Design Generator, AI Developer Tools, AI Code Generator, AI Diagram Generator |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 49,523 | 35,340 |
| MoM Growth Rate | -33.4% | +69.1% |
| Primary Market | United States | India |
| Direct Visits | 19,954 | 12,812 |
| Review Score | 4.6 | 4.3 |
| Saved Count | 1 | 0 |
| Supported Platforms | Website | Website |

## ChartDB

ChartDB attacks a familiar annoyance: understanding an unfamiliar or sprawling database schema. Rather than installing a heavy modeling suite with database access, it asks you to run one read-only query per DBMS — the project publishes a ready-made query for PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, ClickHouse, CockroachDB, Oracle, Snowflake, and BigQuery. Paste the output JSON and you get a full, interactive ER diagram that you can rearrange, annotate, and export.

Beyond visualization, ChartDB works as an editor. You can add tables, subject areas, and sticky notes, edit relationships, use a DBML editor for text-driven modeling, and produce clean DDL scripts in your preferred SQL dialect. The AI ER diagram generator goes the other direction: describe what you want and get an editable, optimized schema draft. Diagrams are also exportable as images or embeddable previews for docs and wikis.

The project is open source under AGPL and has accumulated tens of thousands of GitHub stars, which is why a self-hosted deployment is available alongside the Cloud product. Cloud plans add real-time collaborative editing, database auto-sync that keeps diagrams current as the schema changes, change logs and versioning, and an AI assistant. Teams get multi-user workspaces, 2FA, and priority support; larger organizations can request custom SSO and RBAC terms.

**Pricing & Plans:** ChartDB offers a genuinely free open-source tier (self-hosted, AGPL) that includes all core features and up to two diagrams. Cloud plans run about US$25/month for a single user (Pro) and US$59/month for teams, with annual billing discounts of up to 40%. Custom enterprise pricing covers SAML SSO and granular permissions.

- **One-query schema import:** Paste a single read-only query result and ChartDB renders the whole schema as an ER diagram, with no direct database access or local agent required.
- **AI ER diagram generator:** Describe a database idea in plain language and get a fully editable, optimized ER diagram that you can refine and export straight to SQL.
- **DDL and diagram export:** Export clean DDL scripts in your preferred SQL dialect or download diagrams as images and embeddable previews for documentation.
- **Auto-sync and versioning:** On Cloud plans, diagrams stay in sync with the live database automatically, with change logs and version history to track every schema drift.
- **Real-time collaboration:** Invite teammates to view and edit diagrams simultaneously, with multi-user workspaces and 2FA on team plans.

**Strengths:** Truly open source with a generous free self-hosted option and no database access needed; Fast setup — a single query gets you a complete interactive diagram in seconds; Broad DBMS coverage including PostgreSQL, MySQL, SQL Server, SQLite, ClickHouse, Snowflake, BigQuery, and Oracle; AI generation works both ways: prompt-to-diagram and diagram-to-DDL

**Limitations:** Cloud collaboration, auto-sync, and the AI assistant are paid; the free self-hosted tier limits you to two diagrams and ten tables each; Snowflake and BigQuery support sits on higher-tier plans; As a specialized ERD tool it does not replace a full data-governance or lineage platform

[Profile (Markdown)](https://openaitools.app/tool/chartdb.md)

## Database Sample

DatabaseSample tackles the blank-page problem in data modelling. Instead of opening an empty designer, you search a catalogue of 1,847 published database designs — each with an ER diagram, table and column details, and an automated review that flags missing keys, absent indexes and other structural problems. Nearly a thousand multi-table sample datasets are also available with intact foreign keys, shipping as CSV, JSON, SQL for four dialects, a Prisma seed or a Django fixture, all released under CC0 with no account required.

Around that library sits a working toolkit. The DBML text editor renders a diagram as you type, the SQL playground runs queries in PostgreSQL or SQLite directly in the browser and shows the query plan, and share links bundle the schema, query and result into one reproducible URL. Field generators produce valid UUIDs, localised names, non-uniform numbers and test card data, while SQL dialect converters translate DDL between MySQL, PostgreSQL and SQL Server and spell out the semantic differences.

The AI side is the AI Generator and Dataset Studio. Describe the dataset you need and the model proposes a schema; the Free plan lets you run three designs a day and download a 50-row sample of every table, while Pro and Team plans raise limits, unlock complete datasets and private downloads, and add a stronger model inside the editor. Team workspaces add roles, comments and review requests, and a GitHub Action can review pull requests that change a shared schema.

**Pricing & Plans:** Freemium. All published database designs and datasets are free to download with no account. Dataset Studio generation starts free (50-row samples, 3 designs/day); Pro is $19/month for complete datasets and 25 designs/day; Team is $15 per user per month ($45/month for 3 seats) with shared workspaces; Education is free for verified school email addresses. Yearly billing costs ten months' price; Team is 50% off for verified educators.

- **1,847 database design catalogue:** Browse ready-made schemas by subject, each with an ER diagram, full column details and an automated design review that calls out missing keys and indexes.
- **AI schema generator and Dataset Studio:** Describe the data you need in plain English, compare generated designs, and download generated rows with working foreign keys in CSV, JSON, SQL, Prisma or Django formats.
- **In-browser DBML editor and SQL playground:** Write schema as DBML text and watch the diagram update live, then query generated rows in PostgreSQL or SQLite, inspect the query plan and share the whole thing as one reproducible link.
- **997 multi-table sample datasets under CC0:** Deterministically generated datasets with valid foreign keys, available in eight download formats with no account, no attribution and no restrictions.
- **SQL dialect converters and field generators:** Translate DDL between MySQL, PostgreSQL and SQL Server with differences called out, and generate UUIDs, localised names, skewed numeric distributions and standard test card numbers column by column.

**Strengths:** The design catalogue, sample datasets and download formats are free with no account, making it easy to evaluate before paying anything; Sample data is genuinely relational — foreign keys stay intact across tables, so it loads and queries like real data; Tooling is unusually complete for one site: catalogue, editor, diagram, SQL playground, converters, generators and AI design in one place; Transparent, published pricing with a free education tier and yearly billing equal to ten months

**Limitations:** Generated Studio results expire after 30 days on every plan, including paid ones, so output must be downloaded to be kept; The free tier is deliberately narrow — 50-row samples, three AI designs a day and 20 editor AI requests per month; Credit-style daily limits mean large modelling sessions on the Free plan require waiting for the next day

[Profile (Markdown)](https://openaitools.app/tool/open-source-database-designs.md)

## Frequently Asked Questions

### How do ChartDB and Database Sample compare in monthly traffic?

ChartDB has 49,523 monthly visits, while Database Sample has 35,340. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ChartDB has a month-over-month growth rate of -33.4%; Database Sample has +69.1%.

### How does pricing compare?

ChartDB: Freemium. ChartDB offers a genuinely free open-source tier (self-hosted, AGPL) that includes all core features and up to two diagrams. Cloud plans run about US$25/month for a single user (Pro) and US$59/month for teams, with annual billing discounts of up to 40%. Custom enterprise pricing covers SAML SSO and granular permissions. Database Sample: Freemium. Freemium. All published database designs and datasets are free to download with no account. Dataset Studio generation starts free (50-row samples, 3 designs/day); Pro is $19/month for complete datasets and 25 designs/day; Team is $15 per user per month ($45/month for 3 seats) with shared workspaces; Education is free for verified school email addresses. Yearly billing costs ten months' price; Team is 50% off for verified educators.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Eraser](https://openaitools.app/tool/eraser) | 534,396 | -23.6% | Freemium, Paid, Contact for Pricing | AI diagrams and technical design docs built from your code and systems | [.md](https://openaitools.app/tool/eraser.md) |
| 2 | [Convex](https://openaitools.app/tool/convex) | 390,417 | -18.7% | Freemium, Paid | Reactive TypeScript backend with database, functions and AI gateway | [.md](https://openaitools.app/tool/convex.md) |
| 3 | [Edraw.AI](https://openaitools.app/tool/edraw-ai) | 216,483 | -10.4% | Freemium, Free Trial, Paid | AI-powered visual collaboration for diagrams, mind maps, and charts | [.md](https://openaitools.app/tool/edraw-ai.md) |
| 4 | [MockFlow](https://openaitools.app/tool/mockflow) | 177,254 | -7.9% | Freemium, Paid | An online whiteboard that mixes wireframing, diagramming, and AI agents | [.md](https://openaitools.app/tool/mockflow.md) |
| 5 | [AI2SQL](https://openaitools.app/tool/ai2sql) | 65,466 | -6.6% | Freemium | AI SQL assistant that writes, fixes and runs queries on your real schema | [.md](https://openaitools.app/tool/ai2sql.md) |
| 6 | [Chat2DB Local](https://openaitools.app/tool/chat2db-local) | 55,791 | -5.5% | Free Trial, Paid, Contact for Pricing | AI text-to-SQL client for database management and analysis | [.md](https://openaitools.app/tool/chat2db-local.md) |
| 7 | [Mermaid Chart](https://openaitools.app/tool/mermaid-chart) | 46,022 | +519% | Freemium, Free Trial | Diagrams from text, code, or a single prompt | [.md](https://openaitools.app/tool/mermaid-chart.md) |
| 8 | [Brainboard](https://openaitools.app/tool/brainboard-co) | 18,776 | +4.8% | Freemium, Free Trial, Contact for Pricing | Design, deploy and manage cloud infrastructure visually | [.md](https://openaitools.app/tool/brainboard-co.md) |
| 9 | [SQLAI.ai](https://openaitools.app/tool/aihelperbot) | 15,511 | -37.4% | Freemium, Free Trial | Generate, optimize and explain SQL queries with AI for 28+ database engines | [.md](https://openaitools.app/tool/aihelperbot.md) |
| 10 | [ChatUML](https://openaitools.app/tool/chatuml) | 14,829 | +7.2% | Freemium | Describe your system in words, get a diagram you can edit | [.md](https://openaitools.app/tool/chatuml.md) |

---
Source: https://openaitools.app/compare/chartdb-vs-open-source-database-designs

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)