Cloudera is a software company headquartered in Palo Alto, California. It provides the most widely implemented Big Data distribution
MapR is a software company headquartered in San Jose, California. It provides an Big Data distribution which has unique properties such as:
1 - No centralized failure point, as each node can also act as a namenode
2 - POSIX compliant filesystem 100% compatible with HDFS, which allows to just drag and drop files
Lenovo is a Chinese multinational hardware company with headquarters in Beijing, China.
It acquired IBM's Intel-based server business in 2014 and offers Cloudera certified servers such as the x3550 M5 and x3650 M5 series.
Heimdall is a software company from California developer of the Heimdall Data Cache. This revolutionary technology
allows databases to improve their data thoroughput by up to 5X without having to recompile code. Learn more here