archive.is — take a snapshot of any web page and it will be exist forever even if the original page is gone.
 
autodraw.com 1.1k — create freehand doodles and watch them magically transform into beautiful drawings powered by maching learning.
 
fast.com 803 — check the current speed of your Internet connection.
 
slides.com 413 — create pixel-perfect slide decks and broadcast your presentations to an audience of any size from anywhere.
 
screenshot.guru — take high-resolution screenshots of web pages on mobile and desktops.
 
dictation.io 287 – accurate and quick voice recognition in your browser itself.
 
reverse.photos — upload an image and find similar pictures on the web.
 
copychar.cc – copy special characters and emojis that aren’t on your keyboard.
 
codeacademy.com 522 – the best place to learn coding online.
 
noisli.com 434 — ambient noises to help you improve focus and boost productivity.
 
iconfinder.com 254 – millions of icons for all kinds of projects. Also try icons8.com 53 and flaticon.com 49.
 
jotti.org 139 – scan any suspicious file or email attachment for viruses.
 
wolframalpha.com 265 – gets answers directly without searching – see more wolfram tips.
 
flightstats.com 150 – track flight status at airports worldwide.
 
unsplash.com 303 – the best place to download images absolutely free.
 
videos.pexels.com 343 — an online library of free HD videos you can use everywhere. Also see videvo.net 96.
 
everytimezone.com 201 – a less confusing view of the world time zones.
 
e.ggtimer.com 155 – a simple online timer for your daily needs.
 
random.org 190 – pick random numbers, flip coins, and more.
 
earn.com 494 — replace your email with a mailbox that pays when you reply to someone’s email.
 
myfonts.com/WhatTheFont 85 – upload an image of any text and quickly determine the font family.
 
fonts.google.com 105 – the best collection of open source fonts that you can use anywhere without restrictions.
 
fontstruct.com 110 — draw and build your own fonts and use them in any application.
 
calligraphr.com 227 — transform your handwriting into a real font.
 
regex.info – find data hidden in your photographs – see more EXIF tools.
 
youtube.com/webcam 210 — broadcast yourself live over the Internet without any complicated setup.
 
remotedesktop.google.com 224 — access other computers or allow others to remote access your computer over the Internet.
 
homestyler.com 166 – design from scratch or re-model your home in 3D.
 
pdfescape.com 121 – lets you quickly edit PDF in the browser without Acrobat.
 
draw.io 135 – create diagrams, wireframe and flowcharts in the browser.
 
web.skype.com 56 — make voice and video calls in your browser with Skype.
 
onlineocr.net 45 – recognize text from scanned PDFs – see other OCR tools.
 
wetransfer.com 153 – for sharing really big files online.
 
file.pizza — peer to peer file transfer over WebRTC without any middleman.
 
snapdrop.com 105 — like Apple AirDrop but for the web. Share files directly between devices in the same network without having to upload them to any server first.
 
hundredzeros.com 313 – the site lets you download free Kindle books.
 
app.grammarly.com 75 — check your writing for spelling, style, andgrammatical errors.
 
noteflight.com 48 – print music sheets, write your own music online ( review).
 
translate.google.com 32 – translate web pages, PDFs and Office documents.
 
kleki.com 59 – create paintings and sketches with a wide variety of brushes.
 
similarsites.com 181 – discover new sites that are similar to what you like already.
 
bubbl.us 182 – create mind-maps, brainstorm ideas in the browser.
 
color.adobe.com 97 – get color ideas, also extract colors from photographs.
 
canva.com 88 — make beautiful graphics, presentations, resumes and more with readymade template designs.
 
lmgtfy.com 193 – when your friends are too lazy to use Google on their own.
 
midomi.com 106 – when you need to find the name of a song.
 
history.google.com 152 — see all your past Google searches, also among most important Google URLs
 
faxzero.com 51 – send an online fax for free – see more fax services.
 
tinychat.com 111 – setup your own private chat room in micro-seconds.
 
privnote.com 89 – create text notes that will self-destruct after being read.
 
domains.google.com 91 – quickly search domain names for your next big idea!
 
downforeveryoneorjustme.com 47 – find if your favorite website is offline or not?
 
gtmetrix.com 59 – the perfect tool for measuring your site performance online.
 
builtwith.com 83 — find the web hosting company, email provider and everything else about a website.
 
urbandictionary.com 31 – find definitions of slangs and informal words.
 
seatguru.com 53 – consult this site before choosing a seat for your next flight.
 
flightstats.com 150 – Track flight status at airports worldwide.
 
mymaps.google.com 59 – create custom Google Maps with scribbles, pins and custom shapes.
 
snopes.com 48 – find if that email offer you received is real or just another scam.
 
typingweb.com 110 – master touch-typing with these practice sessions.
 
todo.microsoft.com 86 — a beautiful todo app and task manager. Also see Trello.
 
minutes.io 131 – quickly capture effective notes during meetings.
 
talltweets.com 39 — Turn Google Slides in animated GIF presentations.
 
ifttt.com 85 – create a connection between all your online accounts.
 
namechk.com 88 — search for your desired username across hundreds of social networks and domain names.
 
gist.github.com 93 — create anonymous and secret text notes and much more.
 
flipanim.com 52 — create flipbook animations, includes an onion skin tool to let you see the previous frame as you draw the next one.
 
powtoon.com 83 — create engaging whiteboard videos and presentations with your own voiceovers. Also see videoscribe.co 20.
 
clyp.it — Record your own voice or upload an audio file without creating any account. Also see soundcloud.com 16.
 
carrd.co 179 — build one-page fully responsive websites that look good on every screen.
 
spark.adobe.com 83 — make stunning video presentations with voice narration and wow everyone.
 
anchor.fm — the easiest way to record a podcast that you can distribute on iTunes without have to pay for hosting.
 
duolingo.com 61 — learn to speak Chinese, French, Spanish or any other language of your choice.
 
webmakerapp.com 133 — an offline playground for building web projects in HTML, CSS and JavaScript.
 
pixton.com 96 — create your own comic strips with your own characters and move them into any pose.
 
designer.io 112 — a full-featured vector drawing tool that works everywhere.
 
sumopaint.com 39 – an excellent layer-based online image editor.
 
vectr.com 66 — create vector graphics and export them as SVG or PNG files.
 
twitterbots — create your own Twitter bots that can auto-reply, DM, follow people and more.
 
headspace.com 80 — learn the art of meditation and reduct stress, focus more and even sleep better.
 
class-central.com 196 — a directory of free online courses offered by universities worldwide.
 
googleartproject.com 59 — discover museums, famous paintings and art treasure from all around the world.
 
instructables.com 181 — step-by-step guides on how to build anything and everything.
 
flowgram.com 54 — make data-driven graphics, charts and infographics. Also see adioma.com 22 and eas.ly.
 
marvelapp.com 85 — create interactive wireframes and product mockups.
 
slide.ly — make marketing videos and branded stories for Instagram, Facebook and YouTube trailers. Also see animoto.com 23 and biteable.com 14.
 
gohighbrow.com 95 — Take bite-sized courses on a variety of topics, chapters are delivered by email every monning.
 
htmlmail.pro – send rich-text emails with gmail mail merge.
 
wirecutter.com 157 — whether you need a vacuum cleaner or an SD card, this is the best product recommendation website on the Internet.
 
camelcamelcamel.com 82 — Create Amazon price watches and get email alerts when the prices drop.
 
mockaroo.com 56 — download mock data to fill the rows in your Excel spreadsheet.
 
asciiflow.com 54 — a WYSIWYG editor to draw ASCII diagrams that you can embed in emails and tweets.
 
buffer.com 51 — the easily way to post and schedule updates on Twitter, Instagram, LinkedIn, Google+ and Facebook.
10minutemail.com 103 — create disposable email addresses for putting inside sign-up forms.
 
whereami — find the postal address of your current location on Google maps.
 
sway.com 96 — create and share interactive reports, newsletters, presentations, and for storytelling.
 
apify.com 257 — the perfect web scraping tool that lets you extract data from nearly any website.
 
thunkable.com 191 — build your own apps for Android and iOS by dragging blocks instead of writing code. Also see: glitch.com 45.
 
zerodollarmovies.com 472 — a huge collection of free movies curated from YouTube.
 
upwork.com 121 — find freelancers and subject experts to work on any kind of project.
 
duckduckgo.com 207 – a clean alternative to google search that doesn’t track you on the Internet.
 
Know any useful website that is missing in the list? Please let me know via comment