A free photoshop resource for developers and designers making it easier to work with iOS app icons.App icon template is a free Photoshop resource that makes it easier for you to make icons. Edit a single object and it’ll automatically render out all the various sizes required on iOS & Android. Built-in textures and colors make it easy to get started and the bundled actions make exporting a breeze.
Bookmarking tool made for designersHypershoot’s bookmarking tool lets you store anything interesting you come across on the Web in a visually-appealing, Pin-like way.
Capture and Inspect HTTP RequestsHookbin is a free service which allows you to intercept, parse, and debug HTTP requests of any kind. By offering a volatile unique URL (called an "Endpoint"), it enables you to issue requests against that endpoint and check what exactly has been transmitted.
Free SSL/TLS CertificatesLet’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Publish your data onlineSilk lets anyone create interactive data visualizations, publish websites, and tell interactive stories.
Free mobile & web prototyping (iOS, iPhone, Android) for designersTurn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Source code beautifier / syntax highlighter – convert code snippets to HTMLhilite.me converts your code snippets into pretty-printed HTML format, easily embeddable into blog posts, emails and websites
Free Web & Mobile Prototyping (Web, iOS, Android) and UI Mockup ToolTransform your Web & Mobile (iOS, Android) designs into clickable, interactive Prototypes and Mockups. Share and Collaborate on them with others.
Free web and mobile app prototypingDesign Android, iPhone and desktop apps and run them on your mobile in under 15 minutes.