All your workbooks are encrypted both at rest and in transit. You can also self-host xltrail with our Enterprise subscription on-premise, behind your firewall.
xltrail tracks cell formulas, entered values and VBA code. xltrail does not track: Cell formatting, workbook settings, charts, add-ins, etc.
See the docs.
Yes, xltrail works with any Git system including all major platforms like GitHub, BitBucket and GitLab. If your Git system is self hosted, you need to also self-host xtrail via our Enterprise subscription.