Essential free web development tools for frontend developers - CSS generators, SEO optimization, and code utilities in one place.
Cost / License
- Free
- Proprietary
Platforms
- Online

Essential free web development tools for frontend developers - CSS generators, SEO optimization, and code utilities in one place.

UpTower is an easy-use tool for website monitoring. UpTower checks websites in 1-minute intervals and notifies user via push notifications about every outage immediately. Using UpTower app user can monitor websites and their availability for free.




KFR is built for developers who need a powerful toolkit for audio and DSP applications. The framework is packed with ready-to-use C++ classes and functions for various DSP tasks from high-quality filtering to small helpers to improve development speed.
JustAuthenticateMe offers a simple authentication-as-a-service for your web apps. It uses magic links in emails as a way to verify identity so that neither you nor your users have to worry about passwords.




A one page application to help internet users find information about their public IP address, be it IPv4 or IPv6.


Every day, new breaches expose millions of credentials, and that puts your organization at risk of account takeovers and ransomware attacks. xonPlus changes the game by watching your email addresses and domains against fresh breach data, so you know the moment your data appears...



A reactive notebook for Python — run reproducible experiments, execute as a script, deploy as an app, and version with git.




LocalKeys keeps your app secrets in a local, encrypted vault so you don’t have to store them in .env files. It runs entirely offline, uses strong AES-256-GCM encryption, and requires your explicit approval before any process can access a secret.

Actual Drawing is a visual web authoring tool, which helps you make web pages without having to know HTML, simply by dragging and dropping page content.






Ddaverse is an all-in-one platform offering 70+ fast, lightweight, and easy-to-use online tools. It includes JSON formatting, word counting, text conversion, SIP/FD calculators, age and date tools, fake chat generation, WhatsApp messaging without saving numbers, and many more...
Rysa.ai is an intelligent, Git-integrated automation tool that transforms raw development history into polished release narratives and multi-channel announcements—making software launches smoother and more efficient.


UploadThing is a file upload platform designed for developers, aimed at simplifying and enhancing the process of uploading files in modern web applications. It provides a complete solution covering everything from the upload button to server management, offering greater control...


A curated list of open source boilerplates and starter kits for building modern applications. From web development with React & Next.js to mobile apps with React Native, Flutter, and native platforms.

WordPlate is a modern WordPress stack built with Composer. It simplifies the fuzziness around WordPress development.
An intuitive and effective to-do list app to help you stay organized and manage tasks with ease.




J is a high-level, general-purpose programming language that is particularly suited to the mathematical, statistical, and logical analysis of data. It is a powerful tool for developing algorithms and exploring problems that are not already well understood.

NXT1 LaunchIT is the platform to build and run secure SaaS, automating cloud infrastructure for instant availability. Simply code and deploy. Secure by Design, it offers a direct path to FedRAMP-compliance readiness at a fraction of the traditional time and cost—out of the box.




Powerful tool for developers that use JSON and connect to API services. Document based structure, drag and drop support, OSX lion versions, export ObjC Classes with automatic parsing and type check, browse and fetch own or public APIs or even stream your created JSON directly to...



