Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
Uilicious Snippet - Free testing platform to replicate & share website bugs 🐞
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
ltrace - ltrace intercepts and records dynamic library calls which are called by an executed process and the...