StockSharp (S# for short) offers free programs for trading on any market in the world (American, European, Asian, Russian; stocks, futures, options, Bitcoins, forex, etc.). You can trade manually or use automated trading (algorithmic trading robots, conventional or HFT).

Available connections: FIX/FAST, ITCH (LSE, NASDAQ), Blackwood/Fusion, BarChart, CQG, E*Trade, IQFeed, InteractiveBrokers, LMAX, MatLab, Oanda, FXCM, OpenECry, Rithmic, RSS, Sterling, BTCE, BitStamp, Bitfinex, Coinbase, Kraken, Poloniex, GDAX, Bittrex, Bithumb, HitBTC, OKCoin, Coincheck, Binance, Liqui, CEX.IO, Cryptopia, OKEx, BitMEX, YoBit, Livecoin, EXMO, Deribit, Huobi, KuCoin, BITEXBOOK, CoinExchange, QuantFEED and many others. Any broker or partner broker (benefits).

A universal application for algorithmic trading and easy strategy creation:

• Visual designer to create strategies with mouse clicks.
• Embedded C# editor.
• Easy to create your own indicators.
• Built-in debugger.
• Connections to multiple exchanges and brokers.
• All the world's platforms.
• Schema sharing with your own team.
• More...

A program for automatic downloading of historical and real-time market data:

• Supports many sources: (Yahoo Finance, Quandl, FinViz, FIX/FAST, LMAX, DukasCopy, TrueFX, Oanda, MBTrading, GainCapital, Rithmic, Blackwood/Fusion, Interactive Brokers, OpenECry, Sterling, IQFeed, E*Trade, BTCE, BitStamp and many others).
• High compression ratio (2 bytes per trade, 7 bytes per order book).
• Any data type (candles, ticks, order book, order log, options, news, and more).
• Programmatic access to stored data via API.
• Export to CSV, Excel, XML or a database.
• Import from CSV.
• Scheduled tasks.
• Auto-sync over the Internet between several running instances of S#.Data.

- a trading and charting application (trading terminal).

• Trading from charts by clicking
• Arbitrary timeframes
• Volume, Tick, Range, P&F, Renko candles
• Cluster and box charts

A ready-made graphical framework that you can quickly adapt to your needs, with fully open C# source code:

• Complete source code.
• Support for all StockSharp platform connections: Quik, SmartCom, Plaza II CGate, FIX/FAST, crypto exchanges (30+ at the moment), etc.
• Support for S#.Designer schemas.
• Flexible user interface.
• Strategy testing (statistics, equity, reports).
• Save and load strategy settings.
• Launch strategies in parallel.
• Detailed information on strategy performance (orders, transactions, position, revenue, logs, etc.).
• Launch strategies on schedule.

API - a library for the professional development of trading robots in C#. For those who program in Visual Studio and are professional algorithmic-trading developers.