-
codequery
A code-understanding, code-browsing or code-search tool. This is a tool to index, then query or search C, C++, Java, Python, Ruby, Go and Javascript source code. It builds upon the databases of cscope and ctags, and provides a nice GUI tool.
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
An Oldie but a Goldie.
Related "CodeQuery"(https://github.com/ruben2020/codequery) which uses both cscope and ctags databases (i use both for C/C++ code from within vim) and provides a GUI frontend.
Combine with "Doxygen" and "GNU cflow" (https://www.gnu.org/software/cflow/) and you get a very good view of the static structure of any codebase.
To get a Runtime view i prefer the call graph emitted by the profiler gprof.
A more recent open source tool, NSA Ghidra can also navigate sources, and decompile assembly back to C code. See https://github.com/NationalSecurityAgency/ghidra