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Quill icon: a pen nib shaped like a database, with a glowing cursor

Quill

Write your data in plain words.

Ask your database a question in plain English. Quill reads the schema, writes the SQL, and shows you the answer.

Download Follow the tutorial

For macOS, Windows and Linux. Free and open source.

Which products made the most money this year?

Used 3 tables: products order_items orders

SELECT p.title,
       SUM(oi.quantity * p.unit_price) AS revenue
FROM order_items oi
JOIN products p ON p.id = oi.product_id
JOIN orders o ON o.id = oi.order_id
WHERE o.created_at >= '2026-01-01'
GROUP BY p.title
ORDER BY revenue DESC
LIMIT 5;

The 4K Monitor brought in $26,320 this year, almost three times as much as the next product.

  1. 4K Monitor$26,320
  2. Noise-cancelling Headphones$9,353
  3. Mechanical Keyboard$6,141
  4. Webcam$4,779
  5. Desk Lamp$3,690

How it works

  1. Connect

    Add a database the way you would in any client: a host and password, a file, an SSH tunnel or a connection string.

  2. Ask

    Type a question in plain words. Quill finds the tables it’s about, follows the foreign keys between them and writes SQL for your database’s dialect.

  3. Check and run

    You see the tables it used, the SQL, the rows and a chart. Edit the query, open it in the editor or save it. Changes to data wait for your approval.

It reads your schema before it writes a line.

Quill matches the words in your question against table names, columns and comments. Then it follows foreign keys to find how those tables connect, including the ones you never mentioned.

In a database with 204 tables, “which customers bought which products” brings back exactly four: the two you named and the two that join them.

Join path between customers and products Customers connect to orders, orders to order items, and order items to products. Customers and products are named in the question; orders and order items are found through foreign keys. Other tables stay out of the way. customers orders order_items products
Named in your question Found through foreign keys

A full database client underneath.

When you’d rather write the SQL yourself, everything is still here.

Quill showing the customers table of a shop database in its data grid
Browse and edit rows with types, keys, filters and sorting. Edits stay pending until you commit.

Nearly 90 databases. One window.

Relational, analytical, document, key-value, search, vector and time-series. Connect directly, over SSH, or through JDBC.

PostgreSQL MySQL SQLite SQL Server Oracle ClickHouse DuckDB MongoDB Redis Snowflake BigQuery Elasticsearch Cassandra Redshift Databricks SQL MariaDB Trino Neo4j IBM DB2 SAP HANA DynamoDB Cloud Spanner Cloudflare D1 Turso StarRocks Doris Vertica Teradata Hive Spark Qdrant Milvus Weaviate ChromaDB InfluxDB QuestDB TDengine Meilisearch Solr CouchDB Firebird H2 Exasol OceanBase openGauss etcd ZooKeeper and many more

Read-only until you say yes.

Answers come from read-only queries. When a request would change data, Quill shows you the exact statement and waits. Nothing runs until you approve it.

Mark a connection as production, or lock it to read-only, and it stays that way.

Delete orders placed before 2025?

DELETE FROM orders
WHERE created_at < '2025-01-01';

This changes data. Quill will only run it after you confirm.

Your schema stays close.

Finding the right tables happens on your computer, with no extra service. Only the few tables a question needs go to the model you pick.

Download Quill

Free and open source, for macOS, Windows and Linux.

See all downloads Follow the tutorial

macOS

Windows

Linux

First launch on macOS: right-click Quill and choose Open. On Windows, if SmartScreen appears, choose More info, then Run anyway.