Alpha Vantage
Stock market, forex and crypto data API with a free API key
26 tools in our directory are marked as best for Data analysts, from 9 sections: Databases (8), Data & Analytics (5), Dev Utilities (3), Learning Resources (3) and 5 more sections.

Stock market, forex and crypto data API with a free API key

Open source charting library with more than 20 chart types

Open source web notebook for SQL, Python, Scala and Spark analysis

Open-source SQL editor and database manager for many databases



Visual editor for SQLite and SQLCipher database files

Draw database ER diagrams by writing simple DBML code

Free open source desktop client for SQL and NoSQL databases

Collaborative notebook for SQL, Python and shared dashboards

In-process analytical SQL database for fast local data analysis

Serverless data warehouse for running SQL on large datasets

Open source framework for testing and documenting data quality

Visualize JSON, YAML, CSV and XML as interactive graphs

Free short courses in Python, pandas and machine learning

Generate realistic test data as CSV, JSON, SQL or Excel


Shell that passes structured data between commands in pipelines

Concise JavaScript library for exploratory data charts


Interactive lessons for learning regular expressions step by step

Data quality monitoring with checks written as code or in a UI



Open source SQL engine that queries many data sources in one go

High-level JSON grammar for interactive statistical charts
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