Bull EA V6.1 MT4 is likely an Expert Advisor (EA) designed for automated trading, particularly aimed at taking advantage of upward market trends or bullish conditions. While there isn't a universally known EA with this exact name, the general concept behind such an EA is to automate trading based on specific strategies that capture the movements of the market when it is bullish.

The Dollar Bank EA v3.4 MT4 appears to be an Expert Advisor (EA) for the MetaTrader 4 (MT4) platform. Based on the name, this EA is likely focused on automating trading in the forex market, potentially with an emphasis on currency pairs involving the U.S. Dollar. The version number v3.4 suggests that it's a more mature EA with several updates and improvements over previous versions.