A WYSIWYG editor for writing messages, comments, articles, and lists and in general composing beautifully formatted text in your web applications. It features a sophisticated document model support for embedded attachments and outputs terse and consistent HTML. Trix is developed by Basecamp, the creators of Ruby on Rails, and licensed under the MIT License.

A self-hosted code search and intelligence server that helps developers find, review, understand and debug code. It features a fast global code search with a hybrid backend, code intelligence for many languages and enhancements to GitHub, GitLab, Phabricator, and other code hosts/code review tools via the Sourcegraph browser extension. Developed by Sourcegraph Inc.

A nice web tool/plugin to create and share beautiful images of your source code in your social networks. To use it just start typing on the window or drop a file into the text area. Carbon supports importing files from GitHub gist by simply append a GitHub gist id to the URL, and options for customizing things like your image's syntax theme, window style, and more Created by Dawn Labs on GitHub.

An online color picker tool that generates a gradient/scale association based on a root color in hex code or by using the sliders in its interface. This resource can be downloaded and deployed as a tool for your own projects. Created by GitHub user Hayk An (hihayk).

Leo is a PIM, IDE, and outliner editor that accelerates the workflow of programmers, authors, and web designers. It features clones as its central tool of organization, navigation, customization, and scripting. It integrates Python scripting and outlines making it possible to simulate features in Vim, Emacs or Eclipse only achieved through Python in assembly language. Leo is a different way of using and organizing data, programs, and scripts. It has been constantly updated by its community and developers for over 20 years. Written by Edward K. Ream and the Leo Community.

A simple, fast web app to generate HTML based on a collection of commonly used user interface patterns (also available for running it locally). It helps you speed up the process of making a website, saving time using similar components for different projects. Created by Github user Amie Chen.

A simpler and more privacy-focused alternative to Google Analytics. Fathom respects the privacy of your users and does not collect any personally identifiable information. All while giving you the information you need about your site, so you can make smarter decisions about your design and content.

A self-hosted open source application for managing your billings (invoices, quotes, payments) that also provides CRM-like management for your clients. InvoicePlane lets your clients use one of the different online payment methods like PayPal, Stripe or even using Bitcoins via Coinbase. Developed by the InvoicePlane Team & Community.

A really neat and useful app made to help people find the correct array method a bit more naturally. You can narrow down what you want to do and explore until you find what's most useful to you. Created by Codepen user Sarah Drasner and it's licensed under MIT license.

A tool for lossy PNG image file optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using the pngquant and zopflipng PNG optimization tools. Crunch is licensed under the MIT license.

SVGator is a quick and easy way to animate SVG (No coding skills required). It offers a user-friendly interface and automatically generated code.

Gitea is a community fork of the popular self-hosted Git service Gogs. Its purpose is to provide an easiest and painless way of setting a self-hosted Git service. It is similar to GitHub, Bitbucket, and Gitlab. Gitea is licensed under the MIT License.

Create native desktop applications through a React syntax on all platforms. It works with existing React libraries such as Redux and is compatible with all normal Node.js packages using native components without talking to Electron.

FoundationDB is now Open Source, and for those who doesn't know, this is a distributed database that offers ACID (atomicity, consistency, isolation, durability) levels of reliability with NoSQL's scaling properties and a layered design to build higher-level data storage systems that can be adapted to your specific needs, matching the best data model and running less infrastructure to reduce your operational and technical overhead.

Open source newsletter application like Mailchimp; Runs on your own server and is completely open source. Built on Node.js (v7+) and MySQL (v5.5+ or MariaDB). Featuring an easy list management, list segmentation, GPG encryption and more. Mailtrain allows you to use any provider that supports SMTP protocol to send newsletters and define automation triggers to send specific messages when a user activates the trigger.

Zulip is an open source team chat software built by keeping productivity in mind. It combines the immediacy of asynchronous chat with the benefits of the threaded conversational model. Each conversation in Zulip has a topic, this allows you to take part in more than one conversation at the same time.

Graphite is a replacement for G-suite & MS Office, it enables secure capabilities to ensure user privacy and workflow. Graphite lets you work with the same advantages of cloud computing that makes easy to share and work with your files while keeping the ownership of your data. Share files, make edits, and collaborate while never losing ownership of your data. Graphite is equipped with end-to-end encryption and features decentralized data management given that it's built with Blockstack, powered by Blockchain technology.

Checkbot is a Chrome extension that will help you understand what is happening with your site in order embrace better approaches while fixing issues on your site. It features a quick an easy installation that runs altogether with Chrome web dev tools, it lets you export lists of URLs to CSV, allowing you to embrace development methodologies and working in a team. Also, Checkbot easily lets you check private or local sites embracing all stages of development. Checkbot without a doubt is the right tool to start optimizing your website today.

A set of over 150 design blocks totally responsive built with Bootstrap 4. To start simply use the builder and download the subsequent code. In the downloaded archive, you will find directories and files providing both compiled and minified CSS variations. At the moment of this publication, Froala Web Design Blocks supports all major web browsers.

Delighters.js is a lightweight, declarative, flexible, zero-dependency JavaScript scroll-triggered animation library that toggles class names as you scroll. The library lets you apply interactive animations to any element when they become visible in the viewport. Supports both mobile and desktop devices. Simply add the ‘data-delighter’ attribute to your elements, apply your own CSS3 animations to the element, you can also specify the scroll position (start/stop threshold) at which you want to trigger the animation in the ‘data-delighter’ attribute. It Degrades gracefully to your default styling. Developed by Martin Kool.

Pell is a simple and ultra lightweight WYSIWYG text editor for web. Created purely in JavaScript with no dependencies, written in ES6. Easily customizable with the sass file (pell.scss) or overwrite the CSS file. Supports IE 9+, Chrome 5+, Firefox 4+, Safari 5+, Opera 11.6+.

Shiori is a simple bookmark manager built with Go, intended as a simpler version of Pocket. You can use it as a command line application or as a web application. This application is distributed as a single binary, which means it can be installed and used easily. Features a simple and clean command line interface., basic bookmarks management i.e. add, edit and delete, search bookmarks by their title, tags, url and page content, import and export bookmarks from and to Netscape Bookmark file, portable, thanks to its single binary format and sqlite3 database, simple web interface for those who don't want to use a command line app, by default shiori will download a static copy of the webpage in simple text and HTML format where possible, which later can be used as an offline archive for that page.

Ceev is a Chrome plugin that grabs the info from your LinkedIn profile and places it in a CV/Resume template of your choosing, with customization options available to tweak the content and customize color schemes, fonts, and themes, before exporting it as a PDF file..

A beautiful, responsive, customisable, accessible (WAI-ARIA) replacement for JavaScript's Popup boxes with zero dependencies, SweetAlert2 automatically centers itself on the page and looks great no matter if you're using a desktop computer, mobile or tablet. It's even highly customisable, as you can see below!

Abricotine is an open-source markdown editor software based on modern web technologies like HTML5, CSS3, Node JS, designed for desktop with inline preview. You can preview your document directly in the text editor rather than in a side pane. Write in markdown (or GFM) and export your documents in HTML using templates, preview text elements (such as headers, images, math, embedded videos, todo lists...) while you type, use different themes to display your documents, display document table of content in the side pane, display syntax highlighting for code, show helpers, anchors and hidden characters, copy formatted HTML in the clipboard, write in a distraction-free fullscreen view, manage and beautify markdown tables, search and replace text, ligatures support (Fira Code must be installed on your computer) and many more features on to be announced on future releases.