Teqc (pronouced "tek") is a simple yet powerful and unified approach to solving many pre-processing problems with GPS,GLONASS, Galileo, SBAS, Beidou-2/Compass, and QZSS data, especially in RINEX or BINEX format:
translation: binary data reading/translation of native binary formats (optional RINEX file creation for OBS, NAV, and/or MET files or optional creation of BINEX)
editing: including time windowing; file splicing; SV or other filtering; metadata extraction, editing, and/or correction of RINEXheader metadata or BINEX metadata records
quality check: quality checking of GPS and/or GLONASS data (native binary, BINEX, or RINEX observation files; with or without ephemerides)
These three main functions (from which teqc gets its name: translation, editing, and quality check) can be performed altogether, in pairs, or separately.