How do geth and parity Ethereum nodes compare in terms of:

  • Speed
    • How long does it take to sync with the main net, in both fast and full modes (if possible)
  • Disk space needs
    • What is the size of the chain data in fast and full modes
  • Robustness / Reliability
    • How many critical bugs / crashes were submitted in the last year
  • Security
    • How many security bugs were submitted in the last year
  • Number of users
    • How many Ethereum nodes are currently running on geth vs parity on the mainnet
  • Community
    • Number of maintainers / contributors / stars on Github
  • Features - what features are supported in geth but not in parity and visa versa, e.g.
    • Fast sync
    • Light client
    • JSON RPC methods (differences if any)
    • JavaScript API (differences if any)
    • Fee oracles
    • Archival mode

closed as primarily opinion-based by Ismael, Achala Dissanayake, Nicolas Massart, flygoing, Roman Frolov Feb 12 '18 at 19:46

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • I do not think anybody has compiled such data, so you would most likely to do your own research. – Mikko Ohtamaa Feb 9 '18 at 11:00