Komodo Edit is a FOSS “freemium” subset of Komodo IDE.

• Native font rendering.
• Decent syntax checking that uses standard tools and full configuration.
• Usable (but not awesome) tooltips and autocompletion.
  • You can add APIs and links to dirs that should be scanned.
• Easy to add external tools to make up for shortfalls of what's built in.

• Longish startup time.
• Spellcheck needs to be manually invoked.
• No code formatting.¹⁾
• No support for unit testing.²⁾
• No built-in change watching for the browser.³⁾

Netbeans has lots of support for HTML5 built in.

• Built in server with auto-update in Chrome or Chromium.
• Pretty syntax checking icons.⁴⁾
  • Good HTML syntax checking.
• Good tooltips and autocompletion.
• Automatic spellcheck!
• Resource suggestion (e.g., <img src=“img/ will bring up a list of files).
• Good and easy autoformatting.
• Nifty “wrap in tag” feature.
• Built-in support for LESS/SASS.

• Built-in JavaScript debugger.

• Long startup time.
• Inflexible linting, testing, etc.
• Adding “external tools” is not built in. Available plugins for this are either buggy or don't work.
• Oh-so-painful Swing font rendering on Linux.

Aptana is based on the Eclipse IDE. Buggy. Long startup time. Probably has awesome tooltips and autocompletion, but I didn't get that far.

Didn't try because of the oh-so-painful Swing font rendering on Linux.

Too hard to add tooltips, etc.

Should be automatic.

• JS Testrunner
• Testem

Ideally automatic.

• JSHint
• JSLint

• ?

• tidy?

• js-beautify does JS, CSS, and HTML

We want to be able to compile LESS, SASS, or whatever, and it should probably be automatic.

• ?

Applied at deploy time?

• ?