3 Edited formatting. Removed what I believe unneccesary
source | link

I'd recommend BracketsBrackets. 

A very nice editor built for HTML5 programming but does. supporting other languages as well. Developed by Abobe it is free:

Multiple File Format

Support Brackets supports codes from multiple file types from C++, C, VBScript to Java, JavaScript, HTML, Python, Perl and Ruby. The complete list comprises more than 38 file types. This gives the user flexibility to work on various files of a project simultaneously.

Along with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions, there are extensions available to add capabilities. I've used it for HTML5 and Python both. Offers in-line preview of HTML/CSS coding.

I'd recommend Brackets. A very nice editor built for HTML5 programming but does other languages as well. Developed by Abobe it is free with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions are available to add capabilities. I've used it for HTML5 and Python both. Offers in-line preview of HTML/CSS coding.

I'd recommend Brackets. 

A very nice editor built for HTML5 programming. supporting other languages as well:

Multiple File Format

Support Brackets supports codes from multiple file types from C++, C, VBScript to Java, JavaScript, HTML, Python, Perl and Ruby. The complete list comprises more than 38 file types. This gives the user flexibility to work on various files of a project simultaneously.

Along with this, there are extensions available to add capabilities.

2 added 43 characters in body
source | link

I'd recommend Brackets. A very nice editor built for HTML5 programming but does other languages as well. Developed by Abobe it is free with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions are available to add capabilities. I've used it for HTML5 and Python both. Offers in-line preview of HTML/CSS coding.

I'd recommend Brackets. A very nice editor built for HTML5 programming but does other languages as well. Developed by Abobe it is free with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions are available to add capabilities. I've used it for HTML5 and Python both.

I'd recommend Brackets. A very nice editor built for HTML5 programming but does other languages as well. Developed by Abobe it is free with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions are available to add capabilities. I've used it for HTML5 and Python both. Offers in-line preview of HTML/CSS coding.

1
source | link

I'd recommend Brackets. A very nice editor built for HTML5 programming but does other languages as well. Developed by Abobe it is free with upgrades occurring a few times a year. I'm pretty sure this is cross-platform. Extensions are available to add capabilities. I've used it for HTML5 and Python both.