IDEs, build systems, analysis, debug tools

- AppCode
- rtags
- irony-mode

- biicode
- CMake
- Ninja
- SCons
- Bear
- cpm

- clang static analyzer

- Boost.Test
- CTest
Here is a benchmark result for the comparison: https://code.google.com/p/rapidjson/wiki/Performance . I think in that case rapidjson should be preferred.