Best free open-source AI productivity apps

Bring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. The leading open source Notion alternative.

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and r

Turn any website into a lightweight desktop app with one command, on macOS, Windows and Linux.

The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:

An Open Source implementation of Notebook LM with more flexibility and features

[EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供 CLI/GUI/MCP/Docker/Zotero

A self-hostable bookmark-everything app (links, notes and images) with AI-based automatic tagging and full text search

基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API.

Streaming music player that finds free music for you

Build realtime web, mobile and desktop apps in Python only. No frontend experience required.

Capture first. Organize later. A local-first Markdown app that turns scattered records into clear notes with AI.

The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.

Translate manga/image 一键翻译各类图片内文字 https://cotrans.touhou.ai/ (no longer working)

🐸 Read Frog - Open-source AI language learning & flashcards, an Immersive Translate alternative | 🐸 陪读蛙 - 开源 AI 语言学习与闪词卡，沉浸式翻译替代

Library for conversion between Traditional and Simplified Chinese

Desktop app to generate 3D models from images or prompt using local AI — runs entirely on your GPU

Open-source offline translation library written in Python

AI가 쓴 한글을 사람 글처럼 윤문하는 Claude 스킬 — Korean AI-text humanizer: detects and rewrites translationese, mechanical parallelism, and 71 other AI tells

A self-hosted, anti-social RSS reader.

Unofficial ChatGPT desktop app for Linux (formerly the Codex app), built locally from OpenAI’s official macOS app. Includes Chat, Work, and Codex. Packages for Debian/Ubuntu (.deb), Fedora/openSUSE (.

A self-hosted, database-less note taking web app that utilises a flat folder of markdown files for storage.

A single-file relational spreadsheet for you and your agent.

Keyboard-first local Markdown notes with Vim motions, diagrams, and MCP integration.

AI-native knowledge base & Evernote/Obsidian alternative with instant sync & native MCP. Free on Cloudflare or self-hosted via Docker.

A high-performance, cross-platform editor that supports WYSIWYG Markdown and general text editing.

A search engine that "just works" for Obsidian.

PageLM is a community driven version of NotebookLM & a education platform that transforms study materials into interactive resources like quizzes, flashcards, notes, and podcasts.

Text Generator is a versatile plugin for Obsidian that allows you to generate text content using various AI providers, including OpenAI, Anthropic, Google and local models.

A complete starter kit for an Obsidian + Claude Code personal knowledge management system.

An offline-first scientific writing workspace powered by Claude. LaTeX + Python + 100+ scientific skills all running locally.

A Multilingual, Multimodal Translation Model Family

A lightweight Model Context Protocol (MCP) server for safe Obsidian vault access

开源微信 Bot 管理平台 + App 应用市场 | Self-hosted WeChat Bot Platform with App Marketplace | Lark · Slack · Discord · DingTalk · GitHub · Notion · 20+ Apps | AI Tools | 7 Language SDKs

Real-time two-way speech translation for bilingual meetings — auto-detects the spoken language and translates both directions, cloud or fully offline on-device. Desktop (Windows · macOS · Linux) + bro

Render markdown into email-safe HTML

❤️‍🔥 A chrome extension as an alternative to Notion AI that goes beyond Notion AI. | 一个替代 Notion AI 的浏览器插件，不止于 Notion AI

专为小说创作打造的跨平台、用户友好、AI Native 的一站式 Vibe Writing 工具。A cross-platform, user-friendly, AI-native, all-in-one Vibe Writing tool designed specifically for novel writing.

Translate a whole season of subtitles in one pass — .srt/.ass/.vtt/.lrc, 120+ languages, 27 LLM providers, timing untouched ｜ 整季字幕一次译完，时轴不动，支持 120+ 语言

Starter templates for Obsidian

LeanType is an Open-source keyboard, fork of HeliBoard with additional features and customisation

Lumina Note - A modern Markdown note-taking app with live preview, bidirectional links, and AI assistant

Convert your ChatGPT export (ZIP) into clean Markdown text files with inline media, and generate data visualizations like word clouds and usage graphs.

AI molecular design tool for de novo design, scaffold hopping, R-group replacement, linker design and molecule optimization.

Note Companion: AI assistant for Obsidian that goes beyond just a chat. (prev File Organizer 2000)

Cross-platform desktop app for cleaning development artifacts, managing local developer tools, and checking common environment issues.

One memory layer, every AI tool. Store anything once — recall it in Claude, ChatGPT, Cursor, or any MCP client. Self-hosted on Cloudflare's free tier.

A free, local desktop app to extract subtitles (SRT) from video and translate them into any language — unlimited use, no signup, no cloud.

LLM-maintained personal knowledge base for Obsidian. Based on Andrej Karpathy's LLM Wiki pattern.

NextCRM — Open-source CRM built with Next.js 16, React 19, PostgreSQL, Prisma 7, and shadcn/ui. CRM, projects, invoicing, documents, email client & AI features.

A powerful browser extension that supercharges DeepSeek Chat with custom tooling, persistent memory, and seamless project scaffolding. Generate and download files, run Python in-browser, create PowerP

📚 A customizable dictionary extension that supports double-click lookups in 20+ languages, 1000+ dictionaries, text-to-speech, translation and Anki integration.

CRM and Task management software, Email marketing and many more. Django CRM software app is built for individual use by businesses of any size or freelancers and is designed to provide easy customizat

End-to-end AI-powered academic paper writing system — from idea generation and literature search to experiment execution, result backfill, and LaTeX paper compilation. Supports multi-LLM routing, SSH

MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.

A Raycast Extension for looking up words or translating text in an easy way. Support 48+ languages, support Linguee and Youdao dictionary, support OpenAI, DeepL, Google, Bing, Apple, Baidu, Tencent, V

AI-powered CMS core for personal blogs and creator websites, with AI summaries, translation, moderation, and writing workflows.

SpringNote is a note-taking tool for the lazy. Just jot things down, and AI tidies up the scattered pieces for you, making recording effortless.

Kition brings Markdown, DataTable, WhiteBoard, a tool-using AI agent, browser research, and visual workflows into one desktop workspace.

A bridge between Obsidian and Github Copilot

High-performance Model Context Protocol (MCP) server for Obsidian that provides AI tools with direct vault access through semantic operations and HTTP transport.