While browsing a variety of websites, I kept finding that the same financial metric can greatly vary per source and so do the financial statements reported while little information is given how the metric was calculated.
This is why I designed the FinanceToolkit, this is an open-source toolkit in which all relevant financial ratios (100+), indicators and performance measurements are written down in the most simplistic way allowing for complete transparency of the calculation method. This allows you to not have to rely on metrics from other providers and, given a financial statement, allow for efficient manual calculations. This leads to one uniform method of calculation being applied that is available and understood by everyone.
The Finance Toolkit is complimented very well with the Finance Database, a database that features 300.000+ symbols containing Equities, ETFs, Funds, Indices, Currencies, Cryptocurrencies and Money Markets. By utilising both, it is possible to do a fully-fledged competitive analysis with the tickers found from the FinanceDatabase inputted into the FinanceToolkit.
CNN's fear and greed index in REST API form, courtest of RapidAPI. It's a free API.
Seemingly inspired by CNN's index of the same name, this site crunches and calculates cryptocurrency-related sentiment and comes up with a numerical index of what appears to be influencing the markets at that time, vis a vis, fear or greed. Has a free to use REST API.
News and investment data for just about every market you can think of around the world, from stocks to commodities to cryptocurrency.
UnusualWhales.com is the go to place for retail tooling in options, equities, and crypto markets. It helps retail traders, expose market wide corruption, does deep market research and also has cool memes. We have never received funding, have no outside network or support, and are trying to build the most affordable retail tooling available, while also fight for market transparency. The market needs a lot of work, to put it lightly. I have been quoted in every major news publication, my congress reports have been put into Congressional Hearings, interviews, and part of Josh Hawley's Congress Trading Ban.
Of interest: https://unusualwhales.com/politics/article/congress-trading-report-2022
Provides a way for you to view the latest NASDAQ.com content directly from your favorite RSS reader. You can also use the RSS feed to automatically display headlines on your own website.
Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto.
Recent and upcoming IPOs: https://finnhub.io/docs/api/ipo-calendar
Free, easy-to-use REST API interface delivering worldwide stock market data. Obtain real-time stock data for any ticker down to the minute, request intraday quotes or search 30+ years of accurate historical market data. Easily integrate the API and make use of 170,000+ worldwide stock tickers, collected from 70 global exchanges, including Nasdaq, NYSE, and more
Free tier: 100 requests / month
Market index figures are unavailable at the free tier.
Set up a free account, get access to NASDAQ data through their APIs.
Analyze a company's investment profile by looking at pertinent news, stock price patterns, and overall sentiment.
Has a REST API. Free tier offers 1 API key, 60 requests per minute, 1000 requests per day. The premium tier isn't too bad ($25us/month) if you need to heavily use their service.
A django-framework self-hosted invest statistics tool. Works well in analysis index-based investments.
Free real-time, historical and intraday stock data APIs
Access the best stock market data from over 70 exchanges plus news, crypto and forex data, all for free. Perfect for everyone from startups to enterprise corporations. Free API key.
Free tier: 100 requests/day
Basic tier: $9us/month, 2500 requests/day
This is a self-hosted stock portfolio tracking software based on MariaDB/PHP which tracks portfolios across multiple borkers and automatically updates daily stock data from multiple sources.
A service which tries to make it easy to do paper and algorithmic trading. Paper trading is read-only access to live market data, which is exactly what I need.
Rate limit: 200 requests/API key/minute
https://docs.alpaca.markets/api-documentation/api-v2/
API keys are transmitted in headers.
SilverStrike is a Django webapp that you can use to manage your finances. Tries to make finance management easy. Heavily influenced by Firefly-iii (in particular the UI; both use AdminLTE) but tries to add some new features and leave out some less useful ones. Specifically supports multiple users accessing the same budget, i.e., a household. Supports multiple kinds of transactions (not just bill). Written in Python, uses Django. Has a REST API.
A company that integrates with banks and financial institutions and provides an API when said institutions don't. Some fairly prominent companies seem to use them (Betterment, Venmo, Coinbase, Fanny Mae, AmEx). Intended for helping users budget, manage payments, and bookkeeping.
API docs: https://plaid.com/docs/
A web application made to ease shared budget management. It keeps track of who bought what, when, and for whom; and helps to settle the bills. Written in Python, uses a database (MySQL, Postgres, SQLite) as its back-end. Can be installed as a first-class Pip module. Has a REST API, of course.
Documentation: https://ihatemoney.readthedocs.io/en/latest/
A self-hosted financial manager. It can help you keep track of expenses, income, budgets and everything in between. It supports credit cards, shared household accounts and savings accounts. It’s pretty fancy. You should use it to save and organize money. Does double-entry bookkeeping. Can interface with some banking APIs.