I run https://codefund.io. We have been focusing on providing ethical advertising to support open source development for nearly 3 years. We provide both javascript-based ad embedding, as well as server-to-server. Our platform is 100% open source [1]. We do not store any IP addresses, nor any identifiable information on ad viewers. We are even endorsed by DuckDuckGo as a viable alternative to Google Ads [2]. Our platform is whitelisted with AcceptableAds.com as well [3].

1. https://github.com/gitcoinco/code_fund_ads

2. https://spreadprivacy.com/how-to-remove-google/

3. https://acceptableads.com/en/solutions