weinre: amazing ipad debugging tool, firebug style.
Adobe has gotten into this business as well: http://labs.adobe.com/technologies/shadow/
Also, I haven’t tried this one, but it may be a good alternative: http://jsconsole.com/
http://www.whatismybrowser.com/ Quick and dirty what browser / operative system you are using. Useful for customers to tell you exactly what browser they are using.
Tower: git UI in case your IDE lacks of it, or you don’t have an IDE. http://www.git-tower.com/
MAMP: Apache / PHP / MYSQL all in one, installation is a snap http://www.mamp.info/en/index.html
NAVCAT lite: you need a mysql modeler / admin interface, very useful: http://navicat.com/
MailServe: you need a simple mail server, almost zero config, to run on your mac http://cutedgesystems.com/software/MailServe/
IETester: quick and dirty all versions of IE tester.
Firefox must haves:
Firesizer — emulate viewports to test responsive design in small screens
HTTPfox — like fiddler, http sniffer
Colorzila — Not only for the color picker, but for the tool to create Gradients, it is great!
HTML5 find out what browsers support what features: http://caniuse.com/ , http://mobilehtml5.org/ and http://en.wikipedia.org/wiki/Comparison_of_layout_engines_(HTML5)
Mobile browsers emulators (you can also use Chrome developer tools / Console / emulator to emulate the most popular browser platforms.)
http://www.mobilexweb.com/emulators
http://www.responsinator.com/
Web mobile validator:
http://validator.w3.org/mobile/
Browser statistics: http://gs.statcounter.com/
HTML entities: http://www.danshort.com/HTMLentities/
CSS lint: http://csslint.net/
Ruby On Rails in Windows: when all fails and you can’t install it properly (specially in Windows 8), you can use the bitnami installer: http://bitnami.com/stack/ruby . There is actually another one from http://railsinstaller.org/ in case that other one doesn’t work
Rename files as a batch (utility):
http://development.christopherdrum.com/software/filewrangler/
Fast site boostrap:
http://www.initializr.com/
ecommerce via wordpress:
http://www.woothemes.com/woocommerce/
ember.js online console:
Fast and dirty way to do a post via the command line:
curl -d “username=yo&message=anothertest” http://yourserver.com/yourpage
Generate virtual users:
http://randomuser.me/
Dealing with javascript dates: moment.js is awesome, specially with dates arithmetics
A bundle of cheat sheets: http://overapi.com/
SEO: if you need to implement it, must see this one:
http://schema.org/docs/schemas.html
Outsource the backend:
https://www.firebase.com/
Code review help:
http://www.airpair.com/
Fast image placeholders:
http://placehold.it/
If you are in a mac, fast and simple apache-like server via Python to test web things in localhost:8080
$ python -m SimpleHTTPServer 8080
or you can also install a simple server via npm:
$ sudo npm install -g http-server
$ http-server
Guide to come up with a good json format:
http://jsonapi.org/format/
Internet marketing tools:
http://growthtools.io/