Cachet - Cachet is a free, open source status page for your API, service or company. Built with all of the features that you'd expect from a status page.
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
cState - 🔥 Free & open source under MIT!
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
Status.io - Status.io is a platform for system status pages and status notifications. Companies rely on Status.io to track outages, schedule planned maintenances, broadcast status notifications, and much more; and their customers love the transparency.
ltrace - ltrace intercepts and records dynamic library calls which are called by an executed process and the...