What are the top Christian missionary organizations that are making a significant impact around the world?

Some of the top Christian missionary organizations making a significant impact around the world include:

1. Samaritan's Purse
2. Youth With A Mission (YWAM)
3. Operation Mobilization (OM)
4. World Vision
5. Gospel for Asia

These organizations are known for their humanitarian work, evangelism, and community development efforts in various countries.