LeadDelta - LeadDelta will help you to grow, manage, and engage your Linkedin connections. Cut through the noise and create new opportunities in your network.

Monitornator - Server monitoring made simple

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OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.

TreeLine - TreeLine just stores almost any kind of information.

NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.