Checkout Liquidity at the MQL5 marketplace or you can simply search "Liquidity" on the "Market" tab inside your MT4/MT5 terminal!
Liquidity is designed specifically to create volume. It is designed for those with existing sufficient positive alpha in their Forex accounts, but with little volume. Liquidity trades constantly, on both sides of the market.
By using a parameter rich open skeleton design, Liquidity can be used in near infinite ways (inside the mathematical confines of the Forex market, and broker limitations). Also because of this design, Liquidity can become a plethora of micro-strategies.
For example, Liquidity can be used to trade during a market lull, such as in between important data announcements. During this time normally the majority of algorithms are quiet or inactive. If this is the case for your algos, Liquidity is the perfect overlay / companion strategy to add to your quant portfolio!
In its most basic form, liquidity can be used to grid the market with a combination of market orders and limit orders. In its most advanced form, liquidity can be used to trade constantly, on both sides of the market, with risk management.