is a free, lightweight tool that supports TIB as a source format. It can convert directly to VMDK (stream-optimized for ESXi or monolithic for Workstation).
The VMware vCenter Converter (free) can import .tib files directly. tib to vmdk converter tool
Because file formats evolve, you may need a multi-step approach if direct conversion fails: Solved: tib to vmdk step by step - Experts Exchange is a free, lightweight tool that supports TIB
: Open the Acronis Backup or True Image application. is a free