Best Free and Open Source Tools to Track Cryptocurrencies

CoinGecko CLI – access cryptocurrency market data

CoinGecko CLI is a command-line tool for accessing cryptocurrency market data from the CoinGecko API.

It is aimed at developers, analysts, and terminal users who want live prices, historical data, market rankings, trending assets, and exportable data without using a web browser.

The software provides both standard command-line output and an interactive terminal interface. It supports real-time price lookups, market-cap ranked coin lists, historical price queries, category filtering, CSV export, JSON output for scripting, and live WebSocket streaming for supported API tiers.

This is free and open source software.

Key Features

  • Access real-time cryptocurrency prices from the terminal
  • Interactive TUI with market tables and 7-day price charts
  • Fetch market rankings, trending coins, NFTs, and categories
  • Historical price data with custom date ranges
  • CSV export for analysis in spreadsheets or Python
  • JSON output for scripting and automation
  • Category filtering across hundreds of CoinGecko categories
  • Live WebSocket price streaming for supported API tiers
  • Dry-run mode and command metadata useful for agents and workflows

Website: github.com/coingecko/coingecko-cli
Support:
Developer: CoinGecko
License: MIT License

cg in action
cg in action

CoinGecko CLI is written in Go. Learn Go with our recommended free books and free tutorials.


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Read our verdict in the software roundup.


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