Open Source Tools

Kodro turns robotics learning into one visual loop: Design → Code → Simulate → Prove → Build. Students can assemble robots, program them with Python or blocks, test them in interactive 3D worlds, inspect live sensors and export evidence, all offline-first. Teachers get 24 curriculum lessons plus a lesson creator, while makers can prototype without expensive hardware. No account, cloud connection or AI is required.

Mailyte is the only platform combining team inboxes, transactional/API email, and marketing campaigns in one place — on your own domain. Most teams stitch together Workspace, Postmark, and Mailchimp; Mailyte replaces all three. It's also open source (AGPL-3.0): self-host free on your own hardware, or let us manage it — same product, no lock-in either way. Built-in SPF/DKIM/DMARC checks and a live delivery view keep your mail out of spam, out of the box.

Oats is an AI meeting note-taking tool that is completely open, local, and free. Designed to not get in the way of your meetings, no bots, no subscription needed when running locally with on-device LLM. Available on both macOS and Windows. Enhanced transcription, multi-language support, speaker recognition, assessment, coaching, auto-tracking follow ups and more features via ariso.ai cloud backend.

Juggler is a desktop workbench for AI coding agents. Tool calls, approvals, thread structure and raw context are laid out in Finder-style columns. Conversations branch into sub-threads. Every tool is a JavaScript plugin. Free, open-source, one Go binary.

Meet Sudari 🦦 a tiny pixel otter who moves onto your desktop and refuses to be boring. 👀 Follows your cursor and blinks for real ⌨️ Kneads a tiny keyboard while you type 🐚 Cracks a shell when you scroll ⏱️ Shell-shaped Pomodoro with fireworks 💧 Nudges you to drink, stretch and eat 🤖 Cheers when your AI agent finishes 💕 Says "I love you" now and then 17 hand-made animations · 8 fur colors · 12 languages · Windows & Mac Free & open source. No account, no telemetry. Just an otter.

Cortex is an open source API knowledge layer that turns OpenAPI, AsyncAPI, GraphQL, gRPC, and OpenRPC specs into interactive documentation, typed SDKs in 11 languages, and MCP servers for AI agents.

Open Markdown like a document: fast, clean, and distraction-free. Moji is a lightweight reader and editor for Windows, macOS, and Linux, with live preview, Mermaid diagrams, and PDF, HTML, and PNG export.

Gojo puts local dictation, clipboard history, window controls, a file shelf, and media controls in your MacBook notch. Download a speech model, then dictate into the field you're using. Recognition runs on your Mac in local mode. Includes calendar, battery, camera, and display controls. macOS 14+. Three-day trial; monthly and one-time licenses.

Wealthfolio is an open-source personal finance app for tracking investments, net worth, spending and financial goals. Your financial data is stored locally and the core app works without an account or subscription. Use it on desktop, iPhone, iPad or self-host it. If you want less manual upkeep, Wealthfolio Connect adds automatic brokerage sync, end-to-end encrypted device sync and household sharing.

Open-source AI gateway in Go. One OpenAI-compatible API for every provider, with budgets, caching, guardrails, load balancing, and failover. Single binary, ~20MB docker image MIT, bring your own keys. A self-hosted alternative to OpenRouter and LiteLLM.

49Agents IDE is a 2D canvas where every agent, terminal, repo and machine you own lives on a single map that you build yourself. 49 leverages how our brains are wired to solve tab navigation fatigue problem for 10x Engineers - because of the citybuilder-like UX, it becomes effortless to associate processes to tabs, even when you come back to them days later.

Mastra Factory is an open source, agent-powered software delivery environment. It combines persistent coding agents, repository workspaces, issue intake, planning, implementation, and pull request review in a web application you control.

AppGacha turns a plain-language wish into a real desktop app—utilities, widgets, games, and personal tools. Apps run locally, stay portable, and can be organized into your own desktop workspace.

Most CRMs bolt AI on. Relaticle is built agent-first: any MCP client gets 37 first-party tools over OAuth, with workspace custom fields in each agent's schema automatically. The in-app assistant is stricter: every write is a proposal showing the exact change, approved record by record. Self-host everything under AGPL, including local inference with Ollama. Free forever self-hosted; Cloud is flat per-workspace pricing, not per-seat.

MiniCPM5-2B is OpenBMB's dense 2B follow-up to MiniCPM5-1B. It is built for on-device and local use, leads the 2B open-source class, and stays competitive with larger 4B models on coding, math, long context, and agent tasks. Apache 2.0 weights, GGUF, and MLX are up.

Switch brings AI agents into the collaboration tools your team already uses. Agents join as named participants in your Slack, Teams, Discord, or Telegram channels, sharing the same context and history as your team. Connect an agent once and use it across projects. Each room carries its own context, participants, and rules. Works with Claude Code, OpenAI, Google ADK, LangChain, and more. Open source, self-hostable, running in minutes.

PR Lens is a new way to look at code. It draws animated architecture and data flow diagrams of any codebase and every pull request, so you see the change before you read a single line of code. It runs as a GitHub Action, on the CLI, or as a skill for your coding agent. Open source under MIT.

It’s a local, PR-like code review app that works directly with your working tree. You can review committed, staged, unstaged, and untracked changes, leave inline comments, and organize the work into actual reviews without having to push anything anywhere. You connect whatever AI you're using through MCP and have a coherent experience without all the mundane copy-pasting. All comments live in threads attached to specific code changes, so it’s easy to follow what’s going on over time.

Open source feature flags as markdown files in your repo: the flag, the reason, the decision in one file, reviewed in a PR. One command, no account, so your coding agent can finish the install. A/B tests wait in the same files until you have traffic.

Omi captures your screen and conversations, creates tasks, reminders and advice, helping you find anything you saw or discussed. Turn calls into summaries and action items, ask questions and get personalized responses! Omi is open source, local and works with your own AI keys, giving you full control over what gets recorded, paused, or deleted.

AI stacks are getting more complex with more models, providers, costs, and decisions. ARBR gives your applications one control layer across your AI stack. Connect once through an OpenAI-compatible endpoint to route, govern, observe, evaluate, and deploy across AI models. Open source, MIT-licensed, provider-neutral, and self-hosted.