Isilo — Alternative

iSilo was a legendary mobile document reader (late 90s–2010s), famous for handling huge offline databases ( .pdb files), complex hyperlinked eBooks (like medical guides, technical manuals, religious texts, and offline wikis), and working on everything from Palm OS to early iOS/Android.

Would you like a step-by-step screenshot guide for converting a specific .pdb file using Calibre? isilo alternative