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Developer Tools
Lightweight database client for the terminal
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Harlequin
SQL IDE that runs in the terminal
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About Harlequin
Harlequin is a full-featured SQL IDE for the terminal with a data catalog, a tabbed query editor with autocomplete, an interactive results viewer for large result sets, query history and result export. It connects to many databases through adapter plug-ins, shipping with DuckDB and SQLite, and includes the hsql command-line companion for scripts and agents.
Harlequin website preview
Live preview of harlequin.sh via the WordPress mShots service — it can take a few seconds to generate on a first visit.
Harlequin: strengths & things to check
Strengths
- Completely free to use — this directory lists no paid plan for it.
- Covers sql, database client, terminal, tui — see the focus areas listed in its key facts.
- Has 6 close alternatives in the same category on this page, so switching or comparing is easy.
Things to check
- Free tools can change their model or shut down — avoid locking critical work into it without an export path.
- Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
- It is one of 1288 tools in the Developer Tools category here — compare it against the alternatives below before you commit.
Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.
Harlequin pricing
| Pricing model | Free — listed in this directory as a free tool, with no paid plan required to use it. |
|---|---|
| Free access | Yes — fully free |
| Current plan prices | Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale. |
| Official site | harlequin.sh |
Harlequin key facts
- Category: Developer Tools
- Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
- Focus areas: sql, database client, terminal, tui
- Official site: harlequin.sh
Harlequin FAQ
How much does Harlequin cost?
Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (harlequin.sh).
What is Harlequin used for?
SQL IDE that runs in the terminal Its focus areas in the Developer Tools category: sql, database client, terminal, tui.
Where can I try Harlequin?
On its official site, harlequin.sh — the Visit Official Site button above goes straight there.
Harlequin vs alternatives
| Harlequin | rainfrog | DbVisualizer | GitUI | |
|---|---|---|---|---|
| Pricing | Free — listed in this directory as a free tool, with no paid plan required to use it. | Free — listed in this directory as a free tool, with no paid plan required to use it. | Freemium — a free tier lets you start, and paid plans are available if you need more. | Free — listed in this directory as a free tool, with no paid plan required to use it. |
| Focus areas | sql, database client, terminal, tui | database, tui, sql, terminal | database client, sql, desktop | git client, terminal, rust, tui |
| Official site | harlequin.sh | github.com | dbvisualizer.com | github.com |
| Directory status | Listed | Listed | Listed | Listed |
Side-by-side from each listing's own directory data. Full alternative cards are below.
About the Developer Tools category
Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 1288 tools. Alongside Harlequin, it includes IRedis, usql, oha, Vegeta.
Alternatives to Harlequin
Tools in the same Developer Tools category that share focus areas with Harlequin — worth comparing before you commit:
D
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Universal database client and SQL tool for all popular databases
GDeveloper Tools
Fast terminal UI for Git written in Rust
I
Developer Tools
Interactive Redis terminal client with autocomplete
LDeveloper Tools
Terminal UI for managing Docker and Docker Compose
LDeveloper Tools
Simple terminal UI for Git commands
More in Developer Tools
Comparing tools in the Developer Tools category? These related listings are worth a look: IRedis — Interactive Redis terminal client with autocomplete; usql — Universal command-line interface for SQL databases; oha — HTTP load generator with a realtime terminal UI.
IDeveloper Tools
Interactive Redis terminal client with autocomplete
UDeveloper Tools
Universal command-line interface for SQL databases
ODeveloper Tools
HTTP load generator with a realtime terminal UI
VDeveloper Tools
HTTP load testing tool with constant request rates
HDeveloper Tools
Tiny HTTP load generator, an ApacheBench replacement
EDeveloper Tools
Simple terminal text editor from Microsoft, inspired by MS-DOS Editor