281 Open source projects that are alternatives of or similar to Pencil

The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

Scribble Font for Prototyping & Wireframing

Agrega un botón a la interfáz de archivos de github para ver su historial / Add a button to the github file interface to see its history

Experimental Firefox extension for login management experiences, not being actively developed

Design and prototype customized UI, interaction, navigation, transition and animation for App Store ready Apps in Interface Builder with IBAnimatable.

A minimal Chrome / Firefox extension to help you learn Japanese words in each new tab.

Extension that restores RSS Feed Livemarks in Firefox.

React Context Devtool

Adds the ability to disable JavaScript on specific sites.

The ultimate search extension for Golang

Higher performance and stable video watching experience on the web

조별과제 때마다 "나무위키 꺼라."라고 말하시는게 피곤하신 여러분을 위해 만들어진 Browser Extension, 나무위키를 꺼 드립니다.

A Firefox and Google Chrome extension to clip websites and download them into a readable markdown file.

Bypass Slader's 5 solutions limit per month to college books and remove the paywall about how many solutions left

With the Bookmarks Organizer it's easy to put order in your bookmarks. The Bookmarks Organizer finds no longer working bookmarks, redirects, duplicates and more!

Flexible JSON traversal for rapid prototyping.

Browser extension to control your pi-hole

Full portable & lightweight ZIM reader in Javascript

🧪 Prototyping Tool for exporting React/Typescript Applications!

Converts obfuscated/nested links to genuine clean links.

Bootstrap Design Template — Assets Library — for Adobe XD

New Tab Override allows you to set the page that shows whenever you open a new tab.

Manage Yandex.Music from any macOS window

A Firefox add-on for playing URLs in mpv.

[DEPRECATED] Firefox extension - Displays your GitHub notifications unread count

A simple GUI for inspecting and changing JavaScript variables

📑 A better OneTab for Chrome 📝 Temporarily removed from firefox ⚠️ without maintaining in a period & any cooperative purpose are welcome

Install Browser Extensions straight from GitHub Repositories.

Search and control Firefox from Alfred

WebExtension for saving media, links, or selections into user-defined directories

Browser (Chrome, Firefox) extension for JSON discovery

Implementation of the Google Cast Chrome Sender SDK within Firefox

Control your browser's tabs from the command line

Don't waste your time with compliance. Universal Bypass circumvents annoying link shorteners.

A web extension to block browser fingerprinting

Firefox extension to save and restore tabs as bookmarks

A Sketch plugin that exports Sketch artboards into clickable HTML file and publishes it on an external site.

Browser extension that simplifies access to IPFS resources on the web

Komodo Edit is a fast and free multi-language code editor. Written in JS, Python, C++ and based on the Mozilla platform.

Apollo Client browser developer tools.

Quickly try out any Swift pod or framework in a playground

Untamed-Now-Playing

🎉 Desktop Spotify Web Player Instant Synchronised Lyrics

Collection of custom elements that appear hand drawn. Great for wireframes or a fun look.

Inject hardware interactions directly into HTML layout.

Change colors of contribution graph in GitHub.

A design tool, built using Recoil.

3D printed, LEGO-compatible parametric rapid prototyping, robots and enclosures

A browser extension that replaces occurrences of 'serverless' with 'cgi-bin'

Shows ratings from protondb.com on Steam

MagJS - Modular Application Glue

Adds "quality-of-life" features to NextDNS website for a more practical usability

Typescript, React, Redux, Styled-Component and Webpack based sample extension boilerplate. Runs on Chrome and Firefox. Sample chrome extension.

An add-on that aims to add Vivaldi style toolbar colouring to the Firefox UI

Sublimate: Ridiculously fast full stack Swift prototyping with Vapor and Sourcery.

Remove distractions from the new Twitter layout. Extension for Chrome, Firefox, Safari, Edge & More

Skip YouTube video sponsors (browser extension)

Sketchize is built for UI/UX Designers to help them design lovely apps for mobile, tablet, and desktop devices.

🐣 vue GUI generator

Convert typed text to realistic handwriting!