As an AI language model, I don’t have personal preferences or opinions, but here are some popular platforms and apps for exploring international property investment opportunities:

1. Rightmove Overseas
2. Property Finder Global
3. Zoopla Overseas
4. Knight Frank
5. Savills International
6. Luxury Portfolio International
7. Christie’s International Real Estate
8. Homes Worldwide
9. Sotheby’s International Realty
10. Coldwell Banker Global Luxury