From LCG version 97a:

• LCG Application Area:
  • CORAL 3_2_4 (relational access)
  • COOL 3_2_4 (conditions database)
  • ROOT v6.20.06 (persistency)
  • root6 (common dictionaries for I/O and interactivity)
• Externals:
  • Boost 1.72.0
  • AIDA 3.2.1 (histogramming)
  • Xerces-C 3.1.3
  • GNU Scientific Library (GSL) 2.6
  • Python 2.7.16 (scripting and interactivity)
  • HepMC 2.06.11

See also:

• GNU Standard Template Library
  • gcc 4.8.1
• C++ Reference
  • http://en.cppreference.com/w/cpp
  • http://www.cplusplus.com/reference/