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Opal.so VS ChartDB

Compare Opal.so VS ChartDB and see what are their differences

Opal.so

Real Focus in Real-Time. Measure and improve your focus day by day, on iPhone, iPad and macOS.

No screenshot yet
Rating
0 reviews
Alternatives Is it good?
ChartDB

Visualize your DB via one-single query. Free and open source, database design editor.

No screenshot yet
Rating
0 reviews
Alternatives Is it good?
Tempreon
A personal memory layer for your AI tools, connected over MCP. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, ChartDB seems to be more popular. It has been mentioned 1 time since March 2021.

social mentions
0 vs 1
Productivity popularity
100% vs 0%
alternatives listed
210 vs 75

Base details

Website, pricing, platforms and company facts side by side.

Opal.so
ChartDB
Website opal.so chartdb.io
Pricing
Official pricing
Official pricing
Listed in
Focus Productivity Time Tracking Time Management +1
Databases Diagrams MySQL Tools Database Tools +1

Analysis

An editorial look at what each product does well and who it suits.

Opal.so
ChartDB

No analysis of Opal.so yet.

Overall verdict

  • ChartDB is a solid, free, open-source database diagramming tool that lets you visualize and design database schemas directly in the browser without installation, making it a strong choice for developers who need quick, accessible schema visualization.

Why this product is good

  • Free and open-source, so there are no licensing costs and the community can contribute or self-host
  • Runs entirely in the browser with no installation required, enabling instant access
  • Supports importing existing database schemas via a single query, allowing fast diagram generation from real databases
  • Works with multiple popular database engines like PostgreSQL, MySQL, SQL Server, SQLite, and MariaDB
  • Can export DDL scripts, making it useful for migrating or recreating schemas
  • Clean, intuitive interface that lowers the learning curve for schema design and documentation

Recommended for

  • Developers who need to quickly visualize and document existing database schemas
  • Teams looking for a free alternative to paid ERD and database design tools
  • Students and educators learning database design concepts
  • Startups and small projects wanting lightweight, browser-based schema management
  • Engineers who prefer open-source, self-hostable tooling for data privacy

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Opal.so
ChartDB
100% 100%
Productivity
0% 0%
0% 0%
Developer Tools
100% 100%
100% 100%
Focus
0% 0%
0% 0%
Database Tools
100% 100%

User comments

Share your experience with using Opal.so and ChartDB. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Opal.so 0 mentions
ChartDB 1 mention

Tracking Opal.so since May 2025.

  • Show HN: Clawe – open-source Trello for agent teams
    The limits of a no-code website editor https://chartdb.io/ that's hilarious. - Source: Hacker News / 9 months ago

Alternatives to Opal.so and ChartDB

When comparing Opal.so and ChartDB, you can also consider the following products.

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