50 Websites That Feel Like the Internet’s Hidden Toolbox 🧰
The internet is much bigger than social media, search engines and video platforms. Hidden across the web are thousands of incredibly useful websites that can help you research faster, study for free, edit images, discover music, solve technical problems, manage PDFs, check websites, write code and become more productive.
We have collected 50 useful websites that feel like a digital toolbox. Some are well known, while others are surprisingly underrated. Bookmark this list because you will probably find several tools you can use every week.
📚 Research, Books & Learning Websites
1. Unpaywall — Free Research Papers
Unpaywall helps you find legally available open-access versions of academic research papers. It is especially useful when you encounter a research article hidden behind a paywall.
Best for: Students, researchers, academics and anyone looking for free scientific literature.
2. Open Library — Borrow Books Online
Open Library is an ambitious online library project where users can discover millions of books and borrow eligible digital books.
Best for: Reading, research, book discovery and students.
3. DOAJ — Open Academic Journals
Directory of Open Access Journals (DOAJ) provides access to a large collection of quality open-access academic journals from around the world.
Best for: Academic research and finding freely accessible journal articles.
4. AlternativeTo — Find Alternatives to Apps
AlternativeTo is extremely useful when you want to replace an app or online service. Search for a product and discover alternatives based on platform, features and community recommendations.
Best for: Finding free, open-source and alternative software.
5. JustWatch — Find Where to Stream Movies
JustWatch helps you find where movies and TV shows are legally available to stream, rent or purchase.
Best for: Streaming discovery.
6. Internet Archive — A Digital Time Machine
Internet Archive is one of the most valuable digital preservation projects on the web. It provides access to archived websites, books, software, audio, video and other digital collections.
Best for: Digital archives, historical research and discovering old internet content.
7. Project Gutenberg — Free eBooks
Project Gutenberg offers a huge collection of free eBooks, particularly classic literature whose copyrights have expired.
Best for: Free reading and classic books.
8. OpenStax — Free Textbooks
OpenStax provides free, peer-reviewed educational textbooks covering subjects such as science, mathematics, business and social sciences.
Best for: Students looking for free textbooks.
9. Open Culture — Free Educational Resources
Open Culture collects free educational resources including courses, books, audiobooks, movies and other learning materials.
Best for: Self-learning and discovering educational resources.
10. WolframAlpha — Computational Knowledge Engine
WolframAlpha can perform calculations and provide structured answers across mathematics, science, statistics, geography and many other subjects.
Best for: Mathematics, science, calculations and fact-based queries.
🎨 Design, Image & Creative Tools
11. Photopea — Powerful Online Image Editor
Photopea is a browser-based image editor with many features familiar to users of professional desktop image-editing software. It can work with several common image formats.
Best for: Photo editing, thumbnails, graphics and PSD editing.
12. Squoosh — Compress Images in Your Browser
Squoosh lets you optimize and compress images while giving you control over quality and output settings.
Best for: Website speed optimization and reducing image file sizes.
13. Remove.bg — Remove Image Backgrounds
Remove.bg automatically removes backgrounds from many images, making it useful for product images, profile pictures and graphics.
Best for: Quick background removal.
14. Cleanup.pictures — Remove Unwanted Objects
Cleanup.pictures is designed to remove unwanted objects, people or imperfections from photographs.
Best for: Cleaning up photos and removing distractions.
15. Unscreen — Remove Video Backgrounds
Unscreen can automatically remove backgrounds from video clips and animated images.
Best for: Video editing and social media content creation.
16. Carbon — Beautiful Code Images
Carbon turns source code into attractive, shareable images. It is particularly popular for tutorials, blogs and social media posts.
Best for: Developers and technical content creators.
17. Ray.so — Code Screenshots
Ray.so creates clean and attractive images from code snippets.
Best for: Developers, educators and technical creators.
18. Shots — Product Mockups
Shots helps turn screenshots into polished visual presentations and mockups.
Best for: App presentations, websites and product showcases.
19. Smartmockups — Create Professional Mockups
Smartmockups helps creators present designs on devices, products and other realistic mockup scenes.
Best for: Designers, marketers and product creators.
🔐 Privacy, Security & Web Utilities
20. Have I Been Pwned — Check Data Breaches
Have I Been Pwned lets you check whether an email address has appeared in known data breaches.
Best for: Personal cybersecurity awareness.
21. VirusTotal — Scan Files and URLs
VirusTotal analyzes files, domains, IP addresses and URLs using multiple security engines and databases.
Best for: Security checks before opening suspicious files or links.
22. Privnote — Self-Destructing Notes
Privnote is designed for sharing notes that can disappear after being read. Avoid putting passwords, financial information or highly sensitive personal information into third-party services.
Best for: Temporary text sharing.
23. Temp-Mail — Temporary Email
Temp-Mail provides temporary email addresses that can be useful when you need an address for a short-term purpose.
Best for: Testing services and reducing exposure of your primary email address.
24. File.io — Temporary File Sharing
File.io provides temporary file-sharing functionality. Availability, limits and retention policies can change, so check the service before relying on it for important files.
Best for: Short-term file transfers.
25. Archive.ph — Save Web Pages
Archive.ph can create archived snapshots of web pages, helping preserve pages that may later change or disappear.
Best for: Web research and preserving references.
26. SimilarSites — Discover Similar Websites
SimilarSites helps you discover websites related to a site you already know.
Best for: Finding new websites, competitors and alternatives.
🎵 Music, Radio & Entertainment
27. Radio Garden — Explore Radio Around the World
Radio Garden lets you explore radio stations around the world through an interactive globe.
Best for: Discovering international radio and different cultures.
28. Every Noise at Once — Explore Music Genres
Every Noise at Once provides an enormous visual exploration of music genres and related artists.
Best for: Discovering unfamiliar music genres.
29. Tunefind — Find Songs From Movies & TV
TuneFind helps identify songs used in movies and television shows.
Best for: Finding songs you heard in a particular scene.
30. Music for Programming — Focus Music
Music for Programming offers curated electronic and ambient music intended to accompany focused work.
Best for: Coding, studying and concentration.
31. myNoise — Custom Background Sounds
myNoise offers customizable background noises and soundscapes.
Best for: Relaxation, concentration and background ambience.
32. Coffitivity — Café Ambience
Coffitivity provides café-style background ambience designed to make your workspace feel more lively.
Best for: People who enjoy working with ambient background noise.
🤖 AI & Research Tools
33. Elicit — AI Research Assistant
Elicit is an AI-powered research tool designed to help users discover and analyze academic literature.
Best for: Literature reviews and academic research.
34. Consensus — Research-Based Answers
Consensus helps users explore scientific literature and research findings through an AI-assisted interface.
Best for: Research-oriented questions and literature discovery.
35. Connected Papers — Discover Research Connections
Connected Papers creates visual graphs showing relationships between academic papers.
Best for: Finding related research papers and exploring a research field.
36. Semantic Scholar — Academic Search Engine
Semantic Scholar is an academic search platform designed to help researchers discover scientific literature.
Best for: Research papers, citations and academic discovery.
37. SciSpace — Understand Research Papers
SciSpace provides tools intended to help users read, understand and explore academic papers.
Best for: Students and researchers dealing with complicated papers.
38. Summarize.tech — YouTube Summaries
Summarize.tech uses AI-assisted summarization to help users understand long YouTube videos more quickly.
Best for: Quickly getting the main points from long videos.
39. Phind — AI for Developers
Phind is an AI-oriented search and answer tool aimed particularly at developers and technical questions.
Best for: Programming, debugging and technical research.
💻 Developer & Coding Tools
40. Regex101 — Test Regular Expressions
Regex101 is a powerful online environment for creating, testing and debugging regular expressions.
Best for: Developers working with regex.
41. Code Beautify — Format & Convert Code
Code Beautify provides numerous online tools for formatting, validating and converting different types of code and data.
Best for: Developers, students and programmers.
42. JSON Formatter — Format JSON
JSON Formatter helps developers format and inspect JSON data in a more readable structure.
Best for: APIs, debugging and working with JSON.
43. ExplainShell — Understand Terminal Commands
ExplainShell helps users understand what individual parts of shell commands mean.
Best for: Linux users, developers and beginners learning terminal commands.
⚡ Productivity & Everyday Internet Tools
44. Raindrop.io — Bookmark Manager
Raindrop.io is a bookmark management platform designed to help organize saved websites, articles, videos and other online resources.
Best for: Researchers, bloggers, students and anyone with too many browser bookmarks.
45. Downdetector — Check Website Outages
Downdetector helps users see whether other people are reporting problems with websites, apps and online services.
Best for: Checking whether an outage is widespread or specific to your connection.
46. TinEye — Reverse Image Search
TinEye is a reverse image search engine that can help locate where an image appears online.
Best for: Image research, finding image sources and checking image usage.
47. Fast.com — Internet Speed Test
Fast.com provides a simple way to test your internet download speed directly from your browser.
Best for: Quickly checking internet performance.
48. Smallpdf — Online PDF Tools
Smallpdf provides browser-based PDF tools for tasks such as compression, conversion, editing and other document operations.
Best for: Students, office workers and document management.
49. iLovePDF — Merge, Split & Convert PDFs
iLovePDF offers a collection of online PDF utilities, including tools for merging, splitting, compressing and converting PDF files.
Best for: Everyday PDF work.
50. 10 Minute Mail — Temporary Email
10 Minute Mail provides temporary email addresses intended for short-term use.
Best for: Testing websites and avoiding unnecessary exposure of your primary email address.
🔥 Why You Should Bookmark These Websites
One of the best things about the internet is that you don't need expensive software for every task. There are specialized websites for almost everything—from finding academic papers and free textbooks to editing images, testing code and discovering music.
Instead of installing dozens of applications, you can bookmark the tools you actually need and access them whenever required.
⭐ My Top 10 Picks From This List
- Internet Archive — Digital preservation and research
- Project Gutenberg — Free classic books
- Photopea — Browser-based image editing
- WolframAlpha — Advanced calculations and knowledge
- AlternativeTo — Find software alternatives
- VirusTotal — Security checking
- Radio Garden — Explore radio around the world
- Semantic Scholar — Academic research
- Regex101 — Regex testing
- iLovePDF — Everyday PDF utilities
💡 How to Use This List
You don't need to use all 50 websites. Start by bookmarking the tools that match your needs.
- 📚 Student? Try OpenStax, DOAJ, Semantic Scholar and Project Gutenberg.
- 🎨 Content creator? Try Photopea, Remove.bg, Cleanup.pictures and Squoosh.
- 💻 Developer? Try Regex101, Phind, Carbon, Ray.so and ExplainShell.
- 🔐 Security-conscious? Try Have I Been Pwned and VirusTotal.
- 🎵 Music lover? Try Radio Garden, Every Noise and TuneFind.
- 📄 Office worker? Try Smallpdf and iLovePDF.
- 🔬 Researcher? Try Unpaywall, Elicit, Consensus and Connected Papers.
⚠️ Important Safety Tip
Always be careful when uploading sensitive documents, personal information, passwords or confidential files to online services. Check each website's privacy policy and terms before using it for sensitive material. Features, free limits and availability can also change over time.
📌 Final Thoughts
These 50 websites are a reminder that the internet is full of useful tools hiding in plain sight. Whether you are a student, researcher, developer, blogger, designer, creator or simply someone who wants to get more done online, there is probably something here that can save you time.
Which website from this list is your favorite? Bookmark this page and share it with someone who loves discovering useful websites.
🧰 Save This Internet Toolbox!
Bookmark this article so you can quickly return whenever you need a useful online tool.
❓ Frequently Asked Questions
What are the most useful websites on the internet?
Some highly useful websites include Internet Archive, Project Gutenberg, OpenStax, Photopea, WolframAlpha, AlternativeTo, VirusTotal, Semantic Scholar, Regex101 and iLovePDF.
Are these websites free?
Many of the websites listed here offer free access or free tiers. However, features, usage limits and premium options can vary, so check the individual website before using it.
Which websites are best for students?
Students can benefit from OpenStax, Project Gutenberg, DOAJ, Unpaywall, Semantic Scholar, Elicit, Consensus and WolframAlpha.
Which websites are useful for developers?
Developers may find Regex101, Phind, Carbon, Ray.so, Code Beautify, JSON Formatter and ExplainShell particularly useful.
Which websites can edit images online?
Photopea is a powerful browser-based image editor, while Squoosh can optimize images and Remove.bg can remove image backgrounds.
How can I find free books online?
Project Gutenberg and Open Library are useful starting points for discovering books that can be accessed online, subject to their respective availability and lending or copyright rules.
How can I check whether my email appeared in a data breach?
Have I Been Pwned provides a service for checking whether an email address appears in known data breaches. Never enter your password into an unfamiliar breach-checking website.
What is the best website for checking internet speed?
Fast.com provides a very simple browser-based internet speed test.
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