logstash - logstash is a tool for managing events and logs.
Decision.io - Decision.io is an interesting platform that provides you the simple features to develop the app or an integrated workflow without using any program language or code.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
EntelliFusion - Data Fabric
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.
Laserfiche - Laserfiche offers powerful document management software solutions that are easy to implement and easy to use.