WaveformECG is a web-based tool for managing and analyzing ECG data. Users can browse their files, and upload ECG data in GE MUSE XML Versions 7+, Philips ECG XML versions 1.03+, and WaveForm DataBase (WFDB) format. WaveformECG extracts and stores information from GE and Philips file headers, including analysis results. Digital ECG data is extracted and stored as a time-series. Users can select, view and scroll through individual digital ECG waveforms and lead signals, formatted to look like paper chart recordings.