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A super helpful robots.txt generator to produce & customise your disallow rules - always validate in search console even using this tool!

Display web pages using IE within Chrome. Use Java, Silverlight, ActiveX, Sharepoint, and more. Super helpful to debug loading and or design issues.

A super clean and powerful text editor with some great features to manipulate data, write & troubleshoot code.

Test your site on 2000+ real devices and browsers to find and troubleshoot compatibility issues at scale.

A custom changelog app you can plug into your site to update your users about your product. I'm seeing more and more sites not in the SaaS space utilise a changelog.

I adore this tool and rely on it for new sites and migrations to validate my code before deploying. Test your code, apply your URL and get a clear output.

Top 20 shortlist

Test, learn and debug regular expressions you are using. This tool is one of the best to get to grips with regex. Paste your code & string and get an explanation of what's happening.