Rydr delivers curated, bite-sized articles across geopolitics, philosophy, science, history, and technology — all in under 5 minutes a day. Unlike news apps that flood you with noise, Rydr is intentional. Every card is handcrafted, not scraped. No ads, no clickbait. Think Inshorts for knowledge — not reactive news, but proactive learning. Pick your interests, build a daily reading streak, and learn something new every morning. Available on iOS and Android.

40 real-world problems with 10 detailed modules each. 10 modules per problem covering all aspects of system design Learn from Twitter, Netflix, Uber, and Google architectures

Nexel — AI-powered Excel intelligence platform Nexel parses your Excel files — no matter how messy — and lets you chat with the data using AI. It detects every table across every sheet, even ones starting at random cell positions, and maps cross-sheet formula dependencies. Upload a file, see it visualized, ask a question in plain English, get an answer. Includes a built-in operations panel for instant calculations, export to xlsx/csv/pdf/markdown, and org support for teams.