1. WP Test
WP Test is a free-to-use test data for WordPress that can be installed tofind out “how the theme will behave with different content types”. The data is available as XML (+ the images) and it can be imported to a “test installation” with the help of a plugin. After that, we can simply see the tests as posts and decide if things are ok or not.
2. PHP Image Cache
Image Cache is a lightweight PHP class that compresses, moves, and caches the image in the user’s browser. After that, it returns the new source of the image to be printed in an image tag which results in a serious gain on load time. The class works by simply setting options like the directory, the base URL, etc. and calling a compress function for each image.
3. Sementic UI
Semantic UI is a set of specifications for sharing UI elements between developers. Semantic is also a UI library to make front end development simpler and easier to learn. The Semantic library describes many UI elements. In most instances it might be best to build a custom build with only the elements you need.
UI components are split into four categories, ranging from smallest to largest in scope: UI Elements, UI Collections, UI Modules and UI Views. Semantic gives you a variety of UI components with real-time debug output, letting your code tell you what its doing.
4. Responsive Wireframes
Responsive Wireframes is a free and web-based tool for quickly creating wirefames for any project. These elements can be re-positioned with drag ‘n drops and the work can be saved for future reuse. The tool is focused on responsive layouts as we can define multiple viewports and decide how each element will look on different viewports. This again work by positioning + resizing each element for each viewport and simplifies the sharing of “responsive ideas” a lot. It enables us to insert elements, style them (color, opacity), add text and also resize if wanted.
5. Stack Edit
StackEdit is a free and open source Markdown editor that is based on PageDown (the library used by Stack Overflow). The editor is capable of creating and managing multiple documents and they are stored in local storage. Also, it can import to/export from Google Drive or Dropbox and save documents as HTML.
8. Extract CSS
extractCSS is a free and web-based application that is capable of extracting style-related information from HTML. These include ids, classes + inline styles and the output can be customized too (indent and brackets usage). The tool is very useful when we quickly create an HTML file with inline styles and want to generate the stylesheet of it. extractCSS is also open source and it is built with only client-side code.
Fiddler is a free web debugging proxy that works regardless of browser, system, or platform. You can monitor, inspect, and debug traffic, manipulate and edit web sessions, test your site or app’s performance, and more.
10. Type Wonder
TypeWonder is a free-to-use web application for testing a website with different fonts in real-time. We simply enter the URL of the website, select the font from a list of free fonts (currently, only Google Fonts) and the site is presented with the new font. It is also possible to browse the site afterwards with the new font and the sub-pages will use this font too.