Description: Pi-hole is an open source DNS sinkhole and ad blocker that works at the network level. It allows users to block ads and trackers on all devices on their home network by redirecting traffic from ad-serving domains to a black hole.
Type: software
Pricing: Open Source
Description: Stack Overflow is a popular question and answer site for programmers. Users can ask coding questions and receive answers from a community of developers. The site has a reputation system to rate helpful responses.
Type: software
Pricing: Subscription