U++ is a C++ cross-platform rapid application development framework focused on programmer's productivity. It includes a set of libraries (GUI, SQL, Network etc.), and integrated development environment (TheIDE).
Free self-hosted desktop app: https://github.com/athensresearch/athens/releases; Paid tiers available through https://opencollective.com/athens; Try the demo at https://athensresearch.github.io/athens; Docs viewable at https://app.gitbook.com/@athensresearch/s/handbook/
Scout APM: A developer's best friend. Try free for 14-days.
Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.