Best Open Source products of the week July 27, 2026

Buzz

Your people, your agents, your project — all in one place

Buzz 3 is a new groupchat platform designed for teams of people and AI agents of all sizes. It is built to help you reduce your reliance on tools like Slack and GitHub. The platform is model-agnostic, decentralized, self-sovereign, and fully open source, giving you more control over your team communication.

Second Brain for AI

Persistent memory for Claude, ChatGPT & Cursor. Free.

Most AI chats start from scratch every time, losing your project history and preferences. Second Brain changes that by providing a self-hosted memory layer that integrates with Claude, ChatGPT, Cursor, and any MCP client. You can save context once and recall it later using semantic search rather than just keywords. It includes features like duplicate detection and a clean web UI. Built on Cloudflare, it offers a free tier while keeping your data entirely under your control under an MIT license.

Capsomnia

Caps Lock keeps your Mac awake, even with the lid closed

Capsomnia turns your Caps Lock key into a physical switch that prevents your MacBook from going to sleep. This lets you keep processes like AI agents, SSH sessions, builds, and downloads running even after you close the lid. If you prefer a different key, you can easily remap the shortcut. The Caps Lock light stays functional to show you when the app is active. This tool is free, open source, and includes no accounts or telemetry. It has already gained significant popularity with over 2 million views and thousands of downloads.

Rescript

A free, open source, Descript alternative. Runs in-browser.

Rescript is an open-source, transcript-based video editor that runs entirely in your web browser. Instead of dealing with complex timelines, you can edit your videos by simply editing the transcript text. It works locally and offline, giving you a free and private way to handle video production.

AI YC interview with Gstack agents

AI specialists that join your Google Meet and gives feedback

Garry Tan's open-sourced gstack specialists allow you to bring experts like a CEO, CSO, or QA lead into your Google Meet sessions as voice bots with 3D avatars. They participate in your meetings by taking turns, critiquing your shared screen, and dropping helpful notes in the chat. It is a free, MIT-licensed tool built on AgentCall that acts as an extension of your own coding-agent session.

superfile

A modern, visual file manager for the terminal

Superfile is a modern file manager for your terminal that combines a clean multi-panel interface with powerful file previewing and deep customization options. It allows you to browse and move files between panes just like you would on a traditional desktop file manager, all while staying within a fast, keyboard-driven environment that keeps you productive.

Totem

Your Twitter bookmarks organized to make you read them

Many people bookmark threads on social media and never look at them again. Totem transforms your new tab into a clean, distraction free reading environment for those saved bookmarks. It displays threads in a full width format similar to a newsletter, allows you to highlight key points, search through your saved content, and export your findings whenever you need them.

Memmy Agent

Let every AI remember the same you.

Memmy Agent acts as a central memory hub for all your AI tools, including Claude Code, Codex, and Hermes. It provides a shared and fully controlled memory layer, ensuring every AI agent remembers your unique preferences and history. By turning your chats, decisions, and tasks into long-term knowledge, Memmy brings relevant context to your work and can even execute tasks for you. It is built as a local-first application, keeping your data entirely under your control. You can get started for free with an allocation of 2 million ChatGPT tokens.