A note-taking tool
for networked thought.
As easy to use as a document. As powerful as a graph database.
Roam helps you organize your research for the long haul.
Gitpod is an open-source Kubernetes application providing fully-baked, collaborative development environments in your browser - powered by VS Code.
Tightly integrated with GitLab, GitHub, and Bitbucket, Gitpod automatically and continuously prebuilds dev environments for all your branches. As a result, team members can instantly start coding with fresh, ephemeral and fully-compiled dev environments - no matter if you are building a new feature, want to fix a bug or do a code review.
Theia is an open-source cloud & desktop IDE framework implemented in TypeScript.
Luckysheet is an online spreadsheet like excel that is powerful, simple to configure, and completely open source.
Free wireframing online tool
paste and execute code online.
Powerful and simple online compiler, IDE, interpreter, and REPL. Code, compile, and run code in 30+ programming languages. including JavaScript, Python, Ruby, Java, Node.js, Go, Scheme, C, C#, C++, Lua and many more.
Metaflop is an easy to use web application for modulating your own fonts. Metaflop uses Metafont, which allows you to easily customize a font within the given parameters and generate a large range of font families with very little effort.
Get an instant report of how your website measures up to the best practices.
Check connection encryption, content security, information disclosure and cookies. Compare your results with today's top sites.
Differentiate HTTP headers and content body of two GET URLs.
Free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems
Online test to help speeding up heavy web pages
The HTTP Archive tracks how the Web is built.
The SensioLabs security advisories checker is a simple tool, available as a web service or as an online application, that uses the information from your composer.lock file to check for known security vulnerabilities.
A simple GUI to set up virtual machines for Web development.
RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
JavaScript crusher, code minification
RegPack is a packer intended for use on minified Javascript code.
It is mostly suited to small size constraints (1kb, up to 4kb).
Online diagram/mockups design.
Check easily whether a gem is ready for Rails 4 or not.