Search Engines (Alternative Frontends): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.
Metasearch engine that scrapes and aggregates results from many search services
Privacy-respecting metasearch engine (predecessor of SearXNG)
Self-hosted ad-free Google search proxy that scrapes results
Search engine frontend that scrapes Google results
JavaScript-free privacy meta search engine scraping Google and others (LibreX)
Self-hosted privacy Google metasearch engine with API (scrapes Google results)
Privacy-respecting metasearch engine scraping Google and others
Proxy search engine that scrapes Google, Bing, DDG and more
Alternative frontend for Google Lens