Several useful services

I want to share links to several useful services. Some of them will help save time, others will do unfamiliar / unloved work for you. The list is categorized to make it easier to navigate.

Survey Services
userreport.com (added by Romanych )
simpoll.ru
webanketa.com (added by mihass )

Social networking posting buttons
Yandex button
addthis.com (added by UksusoFF )
share42.com

Customer Relations
userecho.com (added by SSM )
cloudim.ru (added by AlexoLive )
consultsystems.ru (added serzhb )
krible.com
zopim.com
olark.com
liveperson.com (added by a1exis )
siteheart.com (added by Alex_EXEcuter )
onicon.ru (added by Aco )
p3chat.com (added by risotto )
webim.ru (added by shimapa23 )
jivosite.ru (added access )
mibew.org (added by Romanych )
livezilla.net (added by xaker1 )
sitehelp.inkiev.net (added by ilesik )
marva.ru (added by Idiff )
gotalk.ru (added by shandor )
netroxsc.ru (added by Manimal )
zingaya.com (added by psserg )
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Preloader Generators
preloaders.net
ajaxload.info

Button Generators
cssbuttongenerator.com
css3buttongenerator.com
css-tricks.com/examples/ButtonMaker
cssbutton.me (added by defite )

Background generators
patternizer.com/vh4 (added by Londeren )
display-inline.fr (added by Londeren )
creatr.cc/backgrounds

Icon Generators
iconizer.net
findicons.com (added by Paskal )
iconfinder.com (added by hormold )

Site testing
viewing the response and HTTP request headers (added msfs11 )
JSON Formatter & Validator (added msfs11 )
The JSON Validator (added by Grifon )
browsershots.org , multibrowserviewer.com (added BugZ ) - to view the site in various browsers.
creating screenshots (added by Begetan )
viewing the site in different resolutions (added by BugZ )
testing .htaccess (added by student_ivan )
monitoring application status (added by Kane )
tests for the site and the server (added websitepulse )
checking the server for accessibility from different points of the world (Ping, DNS, HTTP, TCP port) (added withlove )
checking the speed of loading the site in real browsers (from different parts of the world) (added withlove )
GTmetrix (added by Andrei M.)

Regular Expression Testing
regex101.com
debuggex.com
refiddle.com
regexplanet.com
For a set of these services, thanks to ReinRaus .

regexr.com (added by student_ivan )
regexpal.com (added by maruan_a )

Sandbox for HTML / CSS / JS
cssdesk.com (HTML + CSS)
jsfiddle.net (HTML + CSS + JS + frameworks)
For both services, thank Desiderata .

Other
wysiwyg form builder
matching colors (@hashspark added)
Ultimate CSS Gradient Generator (added shifty )
selection of color schemes (added kvasko_linuxoid )
CSS3 tools (added by Kane )
Converter to Data URI (added by Kane )
online JavaScript beautifier (added by mrShadow )
html5 for IE (added DimICE )
page template generator
banner covers ( skipfish added)
web forms and database designer (added by MyTaskHelper )
background generator

Continuation of this list ⇨

Thank you all, because most of the links turned out collected by you. However, if something is not found here, you can search on the following pages: one , two , three , four , five , six . Added: BugZ , Santacruz , Webtun , @hellhorse. And, of course, a lot of useful information in the selection of 400 amazing free services .

Last updated: 07/13/2016