Logtime - Diary, tasks and goals. All-in-one productivity solution.

logstash - logstash is a tool for managing events and logs.

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...

Tasks - The new task app from the team that brought us Wunderlist, Microsoft To-Do is a great way to manage tasks. List everything you need to do—or import tasks from Outlook, Todoist, and Wunderlist so you don't have to start over.

Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.