I found this huge repository on GitHub. This guy has amassed a large collection of links, resources, tools and so on that he found useful in his trading/investing activities.

This compilation of resources also includes stuff shared with him via Twitter, Reddit, email, etc.

Don’t forget to read the disclaimer on the website.

Table of Contents:

• GETTING STARTED 11
• BROKERS & TRADING SOFTWARE 3
  • Investing/Long-term 4
  • Active Trading/Professional
  • Canadian 4
  • European
  • Reviews
• GENERAL STOCK MARKET RESEARCH 3
• CALENDARS
  • Earnings Calendars
  • Dividend/Ex-Dividend Calendars
  • Economic Calendars
  • Misc Calendars
• TECHNICAL ANALYSIS 11
  • Education 11
  • Tools 5
• FUNDAMENTAL ANALYSIS 8
  • Education 8
  • Tools 2
• SCANNERS, SCREENERS & IDEA GENERATION 5
• TRADE ANALYSIS & REVIEW 1
• SEC FILINGS
  • Research & Education 1
  • Daily Filings by Type
• HALTS, SHORT SELLING AND EXCHANGE RESOURCES
• PAID TRADING SERVICES/EDUCATION/CHAT ROOMS 1
• BOOKS 1
  • General Stock Market/Uncategorized 1
  • Active Trading and Speculation
  • Valuation and Accounting Tricks 3
  • Financial History/Psychology 1
  • Options
• YOUTUBE CHANNELS 6
• TALKS/SPEECHES
• STOCK MARKET MOVIES/DOCUMENTARIES 2
• TWITTER ACCOUNTS 2
  • Individual Accounts 1
  • Research Focus 1
• DEVELOPER RESOURCES/ALGO STUFF/APIs 2
  • General Resources 3
  • Algo Trading Engines
  • Data APIs
• BLOGS/DISCUSSION FORUMS/LIVE CHATS/MISC RESOURCES 6

Source: https://github.com/2007selvam/stock-market-toolkit