Ansible role which installs and configures Graylog
A fake log generator for common log formats
Fluentd: Unified Logging Layer (project under CNCF)
Elasticsearch/Splunk/Datadog alternative for (logs, metrics, traces)
Qualitis is a one-stop data quality management platform
DTail is a distributed DevOps tool for tailing, grepping, catting logs
Apache Log Parser and Data Normalization Application
Logging Framework for C++
Extensible log shipper with input/output plugins, buffering, etc.
Chef recipes to deploy Graylog
Sematext Logs Client Library for Android
Log Management Web Application
YXDroid