Short answer — frequent flyers who hunt long‑haul business class award space commonly recommend a mix of multi‑airline award search engines, airline-specific tools/OTAs, and paid concierge services. The top options (with why they’re useful) are:

• Point.Me — Multi‑program award search + concierge: searches many airline programs and shows transfer paths, routings and step‑by‑step booking instructions; also offers a paid concierge service to research and book complex long‑haul awards for you. Good when you want one place to scan many partner programs and transfer options. (Point.Me)

• ExpertFlyer — Inventory, class‑of‑service and alerting: long‑time go‑to for checking award/upgrade inventory, fare buckets and seat maps, and for setting alerts when space opens. Useful for monitoring specific flights you want. (Note: carrier coverage has changed over time, so check whether the airline you need is supported.) (nerdwallet.com)

• SeatSpy (and similar route‑focused trackers) — calendar and alerting for specific carriers/routes: shows months of availability and lets you set alerts when saver awards appear on supported airlines (handy for transatlantic / Europe searches). Great for route + date baking. (simpleflying.com)

• KVS / professional availability tools — deep inventory for power users: desktop tools (paid tiers) that many experienced award bookers use for exhaustive searches across alliances and fare classes. Best for advanced users who want the widest technical coverage. (simpleflying.com)

• AwardFares / Roame / other aggregators — aggregated multi‑program search and visualization: newer/smaller aggregators can show availability across many programs and offer timeline/calendar views and alerting; useful to compare programs quickly. Quality and coverage vary, so use alongside direct airline searches. (en.wikipedia.org)

• Paid award concierge/bookers (Point.Me concierge, independent specialists) — time‑saving for hard redemptions: frequent flyers often pay a fee for an expert to piece together complex routings, combine multiple programs, or secure business/first seats for multiple passengers. This can be worth it for pricey long‑haul premium cabins or complicated itineraries. (Point.Me)

Quick guidance on which to pick

• If you want to DIY but save time: use Point.Me or an aggregator first to find options, then verify and book through the airline or transfer partner. (Point.Me)
• If you want precise monitoring for a known route/airline: ExpertFlyer + SeatSpy (or similar) for alerts. (nerdwallet.com)
• If you’re a power user chasing rare space: consider KVS or comparable paid tools. (simpleflying.com)
• If you value time or need something complex: consider a paid concierge (expect fees; they can still save cash/points by finding better routings). (Point.Me)

Caveats & tips

• No single tool covers every carrier and every partner inventory — always confirm availability and pricing on the actual frequent‑flyer program you plan to use before transferring points. (nerdwallet.com)
• Pricing, coverage and tool features change frequently — if you want current comparisons or a short list tailored to a specific route (e.g., New York → Singapore), I can look up the latest tool coverage for those carriers now. (I can search live airline/tool coverage if you want.)

Would you like a short comparison for one or two specific long‑haul routes or to see concierge pricing/examples for a multi‑passenger booking?