Cloudlog

Cloudlog is an open-source PHP & MySQL based amateur radio logging application, allowing you to log contacts via a web browser on any device and platform. Other facilities include syncing with QRZ.com, LoTW and eQSL.

Cloudlog supports HF to Microwave, it can even interface with your radio via CAT, sync logs from WSJT-X. Also, if you are a satellite operator, it integrates with SatPC32. (further details here from the Magicbug website)

The software is running on a server provided by Ellis 2E0EWM and LEFARS members are invited to apply for a free account.