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Attributions & Licenses

Last updated October 13, 20261 min read

Ledger of Alpha is built on open-source software and third-party services. We are grateful to their authors and maintainers. This page lists the notable components and data sources, and the terms that apply to them.

On this page8
ChartingMarket & economic dataAIPayments & integrationsFramework, UI & librariesFontsTrademarksQuestions

Charting

  • TradingView — the embedded Advanced Charts widget and market data shown through it are provided by TradingView, subject to TradingView's terms. Charts and related marks are the property of TradingView.
  • Lightweight Charts™ (TradingView) — Apache License 2.0.
  • KLineCharts — Apache License 2.0.
  • KLineChart Pro — Apache License 2.0. Our chart Studio drawing-tool icons are adapted from this project.

Market & economic data

  • Yahoo Finance — quotes and historical price/candle data. Data is provided for your personal, non-commercial reference and may be delayed; it is not guaranteed accurate and is not a solicitation to trade.
  • StockNewsAPI — market news headlines and company earnings dates.
  • Twelve Data — quotes and historical price/candle data for US stocks and ETFs, forex and crypto. Data provided by Twelve Data.

AI

  • Anthropic, OpenAI, Google, and Perplexity — the models behind our AI features, each under its own terms.

Payments & integrations

  • Freemius — our Merchant of Record: it sells the subscription, processes the payment, and handles applicable taxes.
  • PayPal — payment processing for subscription billing.
  • SnapTrade — brokerage account connection and activity sync.
  • Google — optional Google Sign-In (OAuth).
  • Discord — optional delivery of chart snapshots and alerts via a webhook you configure.

Framework, UI & libraries

The application is built with, among others:

  • Next.js and React — MIT License.
  • Tailwind CSS — MIT License.
  • Recharts — MIT License.
  • Lucide icons — ISC License.
  • Phosphor icons — MIT License.
  • dnd kit — MIT License.
  • better-sqlite3, jose, and other open-source packages under their respective permissive licenses.

Fonts

  • Inter and JetBrains Mono — SIL Open Font License 1.1.

Trademarks

All product names, logos, and brands referenced here are the property of their respective owners. Their use does not imply any affiliation with or endorsement of Ledger of Alpha.

Questions

If you believe an attribution is missing or incorrect, please let us know at support@ledgerofalpha.com and we will update this page.

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Questions about this document? Contact us at support@ledgerofalpha.com.

Attributions & Licenses — Ledger of Alpha