CodeHS

Microsoft MakeCode brings computer science to life for all students with fun projects, immediate results, and both block and text editors for learners at different levels. It's a free, open source platform for creating engaging computer science learning experiences that...

Free Pascal (aka FPK Pascal) is a 32 and 64 bit professional Pascal compiler. It is available for different processors: Intel x86, Amd64/x86_64, PowerPC, PowerPC64, Sparc, ARM. The following operating systems are supported: Linux, FreeBSD, Haiku, Mac OS X/Darwin, DOS, Win32...

Flems is a playground for web development. It's ideal for prototyping ideas & sharing working front-end code examples.

Webhook.site is a tool for building software that not only use webhooks but other types of communication, either by allowing developers to inspect the data that's being sent via a webhook, but also helps users create workflows that respond to and interact with webhooks from...

openFrameworks is an open source C++ toolkit designed to assist the creative process by providing a simple and intuitive framework for experimentation. The toolkit is designed to work as a general purpose glue, and wraps together several commonly used libraries, including:

The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and modularity. It supports a range of object file formats, including Linux and *BSD a.out, ELF, COFF, Mach-O, Microsoft 16-bit OBJ, Win32 and Win64. It will also output plain binary files.

CodeSandbox is an online editor with a focus on creating, sharing and importing new React projects

Material3 eBook reader - Book's Story. Built with Jetpack Compose. Free & Open Source & Ad Free. 4 supported file formats (.txt, .pdf, .epub, .fb2), 2 supported languages. Lots of customization.