LibHunt - LibHunt tracks mentions of software libraries on relevant social networks. Based on that data, you can find the most popular projects and their alternatives.
Tech Overdose - A tech aggregator for dev junkies 👨💻
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
GitNews Web - Trending repositories from GitHub, HackerNews & Reddit
GitSpo - Measure & engage your open-source community
ctrl tab - replace your new tab page with the data that matters to you