- http://unpaywall.org — Free research papers
- http://openlibrary.org — Borrow books online
- http://doaj.org — Free academic journals
- http://gutenberg.org — 70K+ free books
- http://openstax.org — Free textbooks
- http://openculture.com — Free online courses
- http://wolframalpha.com — Solve complex problems
- http://elicit.org — AI research assistant
- http://consensus.app — Research-backed AI answers
- http://connectedpapers.com — Find research connections
- http://semanticscholar.org — Academic search engine
- http://scispace.com — Understand research papers easily
- http://photopea.com — Free Photoshop alternative
- http://squoosh.app — Compress & optimize images
- http://remove.bg — Remove image backgrounds
- http://cleanup.pictures — Remove objects from photos
- http://unscreen.com — Remove video backgrounds
- http://carbon.now.sh — Beautiful code images
- http://ray.so — Share elegant code screenshots
- http://phind.com — AI search engine for developers
- http://regex101.com — Test and debug regex
- http://codebeautify.org — Format & clean code
- http://jsonformatter.org — Format & validate JSON
- http://explainshell.com — Understand terminal commands
- http://shots.so — Stunning product mockups
- http://mediamodifier.com — Powerful online mockup generator
- http://alternativeto.net — Find alternatives to any app
- http://haveibeenpwned.com — Check data breaches
- http://virustotal.com — Scan files & URLs for malware
- http://privnote.com — Self-destructing text notes
- http://temp-mail.org — Disposable temporary email
- http://10minutemail.com — 10-minute temporary email
- http://file.io — Temporary & secure file sharing
- http://radio.garden — Explore global live radio
- http://music-map.com — Discover similar music & artists
- http://tunefind.com — Find songs from movies & shows
- http://musicforprogramming.net — Focus music for coding
- http://mynoise.net — Custom background sounds
- http://coffitivity.com — Ambient café sounds for productivity
- http://justwatch.com — Find where to stream movies
- http://archive.org — The internet’s digital library
- http://archive.ph — Create a personal copy of any webpage
- http://similarsites.com — Find related websites
- http://summarize.tech — AI YouTube video summaries
- http://raindrop.io — Ultimate smart bookmark manager
- http://downdetector.com — Check real-time service outages
- http://tineye.com — Smart reverse image search
- http://fast.com — Quick internet speed test
- http://smallpdf.com — All-in-one PDF tools
- http://ilovepdf.com — Merge, split & convert PDFs
Save this. You’ll definitely need some of these later! 🔖