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)

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