Here is a collection of the formats currently used within the EPN/IGS concerning the RINEX.

RINEX v. 2.10 GPS and GLONASS observations, meteorological data, and navigation files.
RINEX v. 2.11 GPS and GLONASS observations, meteorological data, and navigation files.
Considered as the standard for the exchange of GNSS data in the RINEX 2 format.
RINEX v. 3.00 GPS, GLONASS and Galileo observations, meteorological data, and navigation files.
Used for GNSS receivers reporting the C2 observable, currently considered experimental by EUREF/IGS.
Format accepted on test basis only, contact EPN CB for more information.
RINEX v. 3.01 GPS, GLONASS and Galileo observations, meteorological data, and navigation files.
Used for GNSS receivers reporting the C2 observable, currently considered experimental by EUREF/IGS.
Format accepted on test basis only, contact EPN CB for more information.
RINEX v. 3.02 Current GNSS Constellations (GPS, GLONASS, Galileo, Quasi Zenith Satellite System (QZSS) and BeiDou) and Space Based Augmentation Systems (SBAS) observations, meteorological data, and navigation files. New RINEX file naming convention.
Considered as the standard for the exchange of GNSS data in the RINEX 3 format.
RINEX v. 3.03 (update 1 - Jan. 25, 2017) Considered as current standard for the exchange of GNSS data in the RINEX 3 format (together with RINEX 3.02).
RINEX v. 3.04 Considered as current standard for the exchange of GNSS data in the RINEX 3 format (together with RINEX 3.02 and 3.03).
RINEX v. 3.05 Major restructure and revision of the format document to make it clearer and easier to read, it adds BeiDou signals and tracking codes to fully support BDS-2 and BDS-3, and it also adds missing flags and values to the GLONASS navigation messages.
Format accepted on test basis only, contact EPN CB for more information.
Hatanaka compact RINEX The software for compression/restoration of RINEX observation files.