extra info:

• Ecosia – Microsoft Bing, Google, and EUSP (European Search Perspective)
• 1.org – System1 (its own ad/search stack; results described as “fast, familiar” but not tied to a named external index in public docs)
• GiveWater – Microsoft Bing
• Ekoru – Microsoft Bing
• SearchScene – Microsoft Bing
• Givero – Primarily Microsoft Bing (varies by region/partner deals)
• Lilo – Microsoft Bing (with some regional partners)
• Rapusia – Microsoft Bing (typical for this class of engines)
• GoodSearch – Yahoo/Bing-style partner results (via search affiliate APIs)
• YouCare – Bing/Qwant infrastructure (Bing-based in most setups)