Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
logstash - logstash is a tool for managing events and logs.
7todos - A task board for indie hackers
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
TaskPaper - Plain text to-do lists for Mac
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.