logstash - logstash is a tool for managing events and logs.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.