If you were looking for FREE small web-based apps and tools for working with CSS, this is it. Source: 20 Free Apps & Tools For Working With CSS — WDstack — Medium
Source: (1) Marcin Treder’s answer to What are the best books on UI/UX design for software engineers? – Quora
Top prototyping tools available on the market Source: The best prototyping tools — uxdesign.cc – User Experience Design
Top 5 Must Have Plugins for Gmail Power Users – chethstudios Design Magazine.
These tools are provided by the IT Job Board. Hopefully someone else will find them useful. 14 online tools