Useful websites collection

This is pretty long list but you will find useful websites. If you found at least one useful link for you, I'm happy :)
Comment if some links are not working.

polishmywriting.com - check your writing for spelling or grammatical errors.
urbandictionary.com - find definitions of slangs and informal words.
hundredzeros.com - the site lets you download free Kindle books.
copypastecharacter.com - copy special characters that aren't on your keyboard.
iconfinder.com - the best place to find icons of all sizes. office.com - download templates, clipart and images for your Office documents.
pdfescape.com - lets you can quickly edit PDFs in the browser itself.
myfonts.com/WhatTheFont - quickly determine the font name from an image.
google.corn/webfonts - a good collection of open source fonts.
notes.io - the easiest way to write short text notes in the browser.
typingweb.com - master touch-typing with these practice sessions.
flightstats.com - Track flight status at airports worldwide.
seatguru.com - consult this site before choosing a seat for your next flight.
scribblemaps.com - create custom Google Maps easily.
Pipebytes.com -  transfer files of any size without uploading to third-party server.
marker.to - easily highlight the important parts of a web page for sharing.
wetransfer.com - for sharing really big files online.
screenr.com - record movies of your desktop and send them straight to YouTube.
ctrlq.org/screenshots - capture screenshots of web pages on mobile and desktops.
goo.g1 - shorten long URLs and convert URLs into QR code.
unfurtr.com - find the original URL that's hiding behind a short URL.
postpost.com - a better search engine for twitter.
lovelycharts.com - create flowcharts, network diagrams, sitemaps, etc.
followupthen.com - the easiest way to setup email reminders.
jotti.org - scan any suspicious file or email attachment for viruses.
wofframalpha.com - gets answers directly without searching.
printwhatyoulike.com - print web pages without the clutter.
joliprint.com - reformats news articles and bldg content as a newspaper.
ctrql.org/rss - a search engine for RSS feeds.
e.ggtimer.com - a simple online timer for your daily needs.
random.org - pick random numbers, flip coins, and more.
viewer.zoho.com - Preview PDFs and Presentations directly in the browser.
tubemogul.com - simultaneously upload videos to YouTube and other video sites.
ctrlq.org/dictation - online voice recognition in the browser itself.
scr.im - share you email address online without worrying about spam.
spypig.com - now get read receipts for your email.
sizeasy.com - visualize and compare the size of any product.
regex.info - find data hidden in your photographs - see more EXIF tools.
livestream.com - broadcast events live over the web, including your desktop screen. iwantmyname.com - helps you search domains across all TLDs.
homestyler.com - design from scratch or re-model your home in 3d.
join.me - share you screen with anyone over the web.
onlineocr.net - recognize text from scanned PDFs - see other OCR tools.
typewith.me - work on the same document with multiple people.
whichdateworks.com - planning an event? find a date that works for all.
everytimezone.com - a less confusing view of the world time zones.
gtmetrix.com - the perfect tool for measuring your site performance online.
noteflight.com - print music sheets, write your own music online (review).
imo.im - chat with your buddies on Skype, Facebook, Goggle Talk, etc. from one place. translate.google.com - translate web pages, PDFs and Office documents.
kleki.com - create paintings and sketches with a wide variety of brushes.
similarsites.com - discover new sites that are similar to what you like already.
wordle.net - quick summarize long pieces of text with tag clouds.
bubbl.us - create mind-maps, brainstorm ideas in the browser.
kuler.adobe.com - get color ideas, also extract colors from photographs.
liveshare.com - share your photos in an album instantly. (currently down)
Imgtfy.com - when your friends are too lazy to use Google on their own.
midomi.com - when you need to find the name of a song.
bing.com/images - automatically find perfectly-sized wallpapers for mobiles.
faxzero.com - send an online fax for free - see more fax services.
feedmyinbox.com - get RSS feeds as an email newsletter.
ge.tt - quickly send a file to someone, they can even preview it before downloading.
tinychat.com - setup a private chat room in micro-seconds.
privnote.com - create text notes that will self-destruct after being read.
boxoh.com - track the status of any shipment on Google Maps - alternative.
chipin.com - when you need to raise funds online for an event or a cause. downforeveryoneorjustme.com - find if your favorite website is offline or not?
ewhois.com - find the other websites of a person with reverse Analytics lookup. whoishostingthis.com - find the web host of any website.
aviary.com/myna - an online audio editor that lets record, and remix audio clips online.
disposablewebpage.com - create a temporary web page that self-destruct.
sxc.hu - download stock images absolutely free.
zoom.it - view very high-resolution images in your browser without scrolling.
alertful.com - quickly setup email reminders for important events.
picmonkey.com - Picnik is offline but PicMonkey is an even better image editor.
formspring.me - you can ask or answer personal questions here.
sumopaint.com - an excellent layer-based online image editor.
snopes.com - find if that email offer you received is real or just another scam.
mailvu.com - send video emails to anyone using your webcam.
timerime.com - create timelines with audio, video and images.
stupeflix.com - make a movie out of your images, audio and video clips.
safeweb.norton.com - check the trust level of any website.
teuxdeux.com - a beautiful to-do app that looks like your paper dairy.
deadurl.com - you'll need this when your bookmarked web pages are deleted.
minutes.io - quickly capture effective notes during meetings.
youtube.com/leanback - Watch YouTube channels in TV mode.
youtube.com/disco - quickly create a video playlist of your favorite artist.
talltweets.com - Send tweets longer than 140 characters.
pancake.io - create a free and simple website using your Dropbox account.
builtwith.com - find the technology stack of any website.
woorank.com - research a website from the SEO perspective.
mix1r.com - broadcast live audio over the web.
radbox.me - bookmark online videos and watch them later (review).
tagmydoc.com - add QR codes to your documents and presentations (review).
ctrlq.org/html-mail - send rich-text mails to anyone, anonymously.
fiverr.com - hire people to do little things for $5.
otixo.com - easily manage your online files on Dropbox, Goggle Docs, etc.
ifttt.com - create a connection between all your online accounts.