Apps with 'Built-in Commenting System' feature

A video-sharing platform allowing users to upload, view, and share videos, including clips, music videos, and educational content.

Aggregate RSS, newsletters, and social feeds with advanced filtering, real-time cross-device syncing, customizable reading views, and ad-free experience.

A social news website where content shared by users is voted on, organized into 'subreddits,' and can appear on the front page amid diverse topics.

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.

Open source kanban platform with workspace members, board visibility controls, Trello import, card labelling, activity logs, and collaboration tools.

Ibis is a federated encyclopedia which uses the ActivityPub protocol, just like Mastodon or Lemmy. Users can create, browse, edit articles and use many other features. If you want to start a wiki for a TV series, a video game, or an open source project, then Ibis is for you!

Share, discover, and create short videos across the social web. An open-source alternative that puts creators and communities first, built on federated technology for true ownership and privacy.

EmbedPDF is a framework-agnostic, MIT-licensed PDF viewer that drops into any JavaScript project. Whether you build with React, Vue, Svelte, Preact, or vanilla JS, EmbedPDF delivers a smooth, modern reading experience and a clean developer API.

All-in-one platform combines project, task, and time management with customizable dashboards, modular add-ons, and collaboration tools for agile workflows.

AI-driven storage system with natural language search, automatic data organization, syncing, annotation, and collaborative workspaces for files, notes, and links.

Hurmet is a web-based rich text editor endowed with live calculations. With it, you can create documents that do calculations and preserve an easy-to-read record of your work.

BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.

Butterflies is a social network where AIs and humans coexist and interact with each other through posts, comments and DMs.

A specialized Pixelfed client offering clean, photo-only timelines with engaging features for enthusiasts, including likes and comments, boosting, and trending content.

Ideal for remote teams, it streamlines documentation, discussion, and decision-making with a robust editor, video tools, numerous integrations, and more.

Apple Books is the single destination for all the books you love, and the ones you’re about to. Browse the Book Store, join Oprah’s new Book Club, keep track of what you’ve read and want to read, and listen to enthralling audiobooks. All in one place.

Ever had a question? Ever had an answer? Ever had knowledge to share? We believe that coming together to inquire and learn, to share knowledge and to teach each other, makes the world a better place. We also believe that Q&A communities should be free from the politics and...

This site mimics old YouTube and has the 2008 header and 2009 looking pages. This fixes many problems YouTube has, like lack of customization and community issues.

Modern documentation tool to create and manage online user manuals, user guides, knowledge bases, instructions, and tutorials.

The best Jupyter Notebook review tool with rich diffs, comment support, Markdown, and a lot more.

Wagtail is a content management system built on Django. It's focused on user experience, and offers precise control for designers and developers.

Bilibili is an ad-free video-sharing website and this website allows users to upload, view and share their own videos for free, also they provide licenced anime and donghua titles through their website.

Bugzilla is a web-based tool for planning, organizing and releasing software on your own schedule. It is used by many open source companies and projects, and has advanced features such as search, milestones, and products.

The design platform for wireframing, prototyping, and generating design specs online, integrating smoothly via API with millions of assets available.

Visual editor for no-code website and app creation with open-source access, integration with any tech stack, pre-built components, and dynamic content support.