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)

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Here’s how those engines generally compare on privacy and donation percentage, based on what they publicly state and how they’re built.

Privacy (best to weaker, roughly)

Stronger privacy (no tracking / minimal logs, clear policies):

• Ekoru – Markets itself as privacy‑focused: no tracking, no personal data sold; results via Bing but with a “no profiling” stance. greenqueen.com
• Ecosia – EU-based, GDPR-compliant, states it doesn’t sell personal data and anonymizes queries; uses Bing/Google/EUSP but keeps identifying data limited. support.ecosia
• Lilo – French, GDPR-bound; emphasizes limited data retention and no sale of personal data; results mainly from Bing. humanrightscareers
• YouCare – French engine; subject to EU privacy rules and claims not to sell personal data; still uses Bing/Qwant infra. humanrightscareers
• 1.org – U.S.-based; says it doesn’t sell personal information, but like most U.S. ad-funded engines it does process queries for ads and may log more than EU-centric options. ir.system1

Weaker/less clear privacy posture (still better than mainstream trackers, but more ad/affiliate oriented):

• GiveWater – Nonprofit branding and mission-driven, but privacy policy is more standard ad-supported; less emphasis on “no tracking” than Ekoru/Ecosia. value-match.co
• SearchScene – Uses Bing; privacy claims are relatively generic compared to Ecosia/Ekoru.
• Givero – Aggregator model; privacy depends on region and partners; not known for strong “no-tracking” positioning. computer.howstuffworks
• Rapusia – Ad-revenue charity model; privacy details are sparse compared to Ecosia/Ekoru. humanrightscareers
• GoodSearch – Older extension-based model; privacy posture is not a primary selling point. humanrightscareers

If privacy is your top priority, the safest picks from your list are: Ekoru and Ecosia, followed by Lilo and YouCare (all EU/GDPR-leaning and explicitly anti-tracking).

Donation percentage (highest to lower, as stated)

These are the claimed shares of profits/ad revenue going to charity:

• Ecosia – States it gives 100% of profits to environmental and social projects. humanrightscareers
• GiveWater – Describes itself as a nonprofit that passes the money made from clicks through partner charities; effectively all net surplus goes to mission, though exact % of revenue isn’t always spelled out. value-match.co
• 1.org – Says it donates a portion of ad revenue to chosen 501©(3)s; not “all profits,” but a defined share of ad earnings. 1
• Lilo – Publicly says 80% of profits go to charities/projects each month. humanrightscareers
• YouCare – Claims 80% of profits to charities. humanrightscareers
• Rapusia – States half (50%) of earnings go to social/environmental projects. humanrightscareers
• GoodSearch – Typically around 50% of ad revenue to charity in its model. humanrightscareers
• Ekoru – Focuses on donating ad revenue to ocean cleanup, but doesn’t prominently publish a precise % figure like “80% of profits”; it’s more “we donate our earnings” than a fixed ratio. greenqueen.com
• SearchScene – Similar to Ekoru: mission-driven with donations, but no widely cited fixed percentage.
• Givero – Shares ad revenue with user-selected charities; exact % varies by campaign and partner deals, not a single high-profile fixed number. computer.howstuffworks

Practical takeaways

• Best privacy:
  • Ekoru and Ecosia (then Lilo, YouCare).
• Highest stated donation share:
  • Ecosia (100% of profits) and GiveWater (nonprofit, effectively all surplus) are at the top;
  • Lilo and YouCare next (about 80% of profits);
  • Rapusia and GoodSearch around 50%.

If you want one engine that balances both well, Ecosia is usually the best single pick: strong privacy stance plus a clear “100% of profits to charity” model. support.ecosia