Find open-source software you can trust.

FineTune gives each Mac app its own volume, mute, routing, and EQ controls from a menu bar panel. You can send apps to different or multiple outputs, manage input and display audio devices, and restore saved routing when hardware reconnects. It requires macOS 15 or later and Screen & System Audio Recording permission on first launch.

JS Paint recreates the tools and menus of classic Microsoft Paint in a web application, with touch support, themes, extra file types, and accessibility-oriented controls. Users can load images from URLs, upload to Imgur, and create experimental multi-user sessions. Those sessions are explicitly not private and may interrupt each other or lose work, so they are unsuitable for dependable collaborative editing.

Glass is a desktop meeting and context assistant that combines on-screen activity with live audio to produce notes, summaries, action items, and answers based on earlier screen and sound history. Keyboard shortcuts let users show the interface or ask a question on demand, and the project states that the window stays out of recordings, screenshots, and the Dock. A ready-to-run macOS app is available, while Windows support is beta. Users can connect OpenAI or Gemini, or use local Ollama and Whisper models.

ClawX is a desktop interface that embeds the OpenClaw runtime and replaces command-line setup with a guided application experience. Users can configure providers, chat with agents, manage skills, workspaces, scheduled tasks, diagnostics, and selected memory tools through visual controls, while Developer Mode exposes more advanced settings. It is aimed at users who want OpenClaw capabilities without maintaining a separate terminal-driven installation, with Windows and multilingual operation explicitly documented.

HuLa is an instant-messaging application for Windows, macOS, Linux, iOS, and Android. It supports direct and group chat, contact and group management, file transfer, voice and video calls, and an integrated AI chat assistant. A complete deployment also requires the separate HuLa-Server repository. A web version is not currently supported, and direct macOS downloads may require handling certificate or quarantine warnings.

FSNotes is a Markdown-first notes manager for macOS and iOS that also works directly with ordinary text files. Notes can live across multiple folders and sync through iCloud Drive or Dropbox, while tags, double-bracket cross-note links, code highlighting, and inline images support organization and writing. Encryption, optional Git versioning, and backups are available for users who want more control over stored files.

Caprine is an unofficial Facebook Messenger desktop client for macOS, Linux, and Windows. It separates conversations from the browser and adds options such as dark themes, keyboard shortcuts, custom styling, silent updates, and adjustable text size. Some integrations, including menu-bar mode, Touch Bar support, and system Do Not Disturb behavior, are available only on macOS.

This is the official client for the Mullvad VPN service across desktop and mobile platforms. It supports WireGuard connections and options such as multihop routing, traffic obfuscation, custom DNS, content blocking, and controlled local-network access, while split-tunneling availability varies by platform. Mullvad publishes signed builds and external audit reports for the app. A Mullvad VPN service account is required to use it as a VPN client.

Open CoDesign is a local-first desktop app that turns prompts into interactive prototypes, slide decks, and marketing assets, with live preview, pinned comments, and targeted visual adjustments. It supports Claude, GPT, Gemini, Kimi, GLM, Ollama, and OpenAI-compatible providers, and can import existing Claude Code or Codex configurations. Projects can be exported as HTML, PDF, PPTX, ZIP, or Markdown. Cloud providers require the corresponding API key or subscription, while a local model can support offline use.

Publii is a desktop static-site CMS for Windows, macOS, and Linux that gives nontechnical users a familiar interface for writing posts, choosing themes, and configuring a site. The application generates the website locally, so content can be created and revised offline before changes are uploaded to a server. It suits individuals and small teams that want static-site delivery without adopting a command-line generator or a server-hosted CMS.

Rancher Desktop brings a local container runtime and Kubernetes environment to Windows, macOS, and Linux development machines. Developers can manage the environment through the desktop app and use the included rdctl command-line tool for automation. A limited HTTP API also exists, but the project describes it as internal and experimental, so integrations built directly on that API may need changes between versions.

Final2x is a cross-platform desktop tool for enlarging low-resolution images with super-resolution models, producing higher-resolution output without requiring a command-line workflow. Its current backend also supports custom models. Releases are available for Windows, macOS, and Linux, although platform setup differs: Linux users need Python 3.9 or newer, PyTorch 2.0 or newer, and additional system dependencies. On macOS, the first launch may require a terminal command to remove the downloaded app’s quarantine restriction.

DbGate provides one interface for working with databases such as MySQL, PostgreSQL, SQL Server, MongoDB, and SQLite. Users can browse and edit data, change schemas, compare and synchronize structures, build visual queries, and run batch imports or exports. It is available as a Windows, macOS, or Linux desktop app and can also run as a web application through Docker or an NPM package.

OpenMTP provides a two-pane file manager for transferring data between macOS and Android or other MTP devices over USB. It supports internal storage and SD cards, drag-and-drop transfers, multiple files larger than 4 GB, grid and list views, and keyboard navigation. Current releases require macOS 11 or later.

Bring everyday development material into one local-first desktop workspace: code snippets, Markdown notes, HTTP requests, calculations, drawings, and conversion tools. Everything is stored as readable Markdown with frontmatter, so the vault can be versioned with Git or synchronized without relying on a proprietary database. Preview-first importers accept content from several snippet managers, Obsidian folders, OpenAPI, Postman, and Bruno. The app runs on macOS, Windows, and Linux for developers who value portable, inspectable data.

OpenPencil is an open-source design editor available as a desktop application or web app, with native read and write support for `.fig` and `.pen` documents. Its chat agents can create and modify nodes through a large design-tool set, while the CLI, plugin API, XPath queries, and MCP server enable headless inspection, conversion, linting, token extraction, and export. The project keeps workflows programmable and local, although its roadmap still documents Figma compatibility gaps.

Applite gives macOS users an app-store-style interface for Homebrew Casks, with a curated gallery and one-click installation, updates, and removal of third-party applications. It is designed for people who want Homebrew’s software catalog without memorizing brew commands, and it works with an existing Homebrew installation. The app also respects HTTP, HTTPS, and SOCKS5 system proxy settings. Applite requires macOS 13 or newer, and Homebrew remains the underlying package manager that must be available on the machine.

Headlamp provides an interactive Kubernetes interface that can run inside a cluster or locally as a desktop application. Connect one or several clusters to inspect and edit resources, read logs, open exec terminals, and extend the UI with plugins. Controls and write operations reflect Kubernetes RBAC, rather than granting permissions of their own. A working kubeconfig or service-account token is required, and limited credentials will naturally restrict which resources and actions the interface can expose.