Bitculator

Bitculator is a crypto market data site built and run by a solo developer in Denmark. Live prices are averaged across 16 exchanges, with market cap, volume, a market heatmap, a Fear & Greed index per coin, and a published trust score for each exchange. Everything can be browsed for free without an account.

Free tools include DCA, profit-and-loss, staking, loan, interest, and tax calculators. For developers there is a free Data API (10,000 requests a month) with an OpenAPI spec and open-source SDKs in eight languages, an MCP server for AI assistants, and embeddable calculator widgets. The site is available in 27 languages and runs on Hetzner servers in Germany.