Find the open-source solution that fits.

TieZ is a clipboard manager for Windows and macOS that keeps copied items searchable by content, source application, or date. Users can organize entries with tags, run sequential-paste workflows, edit an item in an external editor, and synchronize history through WebDAV or MQTT. Preview masking helps hide sensitive values such as identity and phone numbers without removing the underlying item. Linux support is listed as coming later, so current releases are intended for Windows and Mac users.

DeepBot is a desktop AI assistant for coordinating business and personal workflows through multiple isolated agent sessions. It can run tasks in parallel, retain memory, schedule recurring work, compose reusable skills, and use tools for files, commands, browsers, documents, media, and messaging. Feishu, WeChat, and WeCom integrations map conversations to independent sessions for cross-platform workflows. File and command operations are checked against a path whitelist, while external connectors require the relevant application credentials and access policies.

Skill Scanner checks individual skills, directories, or repositories with static rules, shell-pipeline taint analysis, Python dataflow analysis, and optional LLM or cloud engines. It can produce SARIF or HTML reports and run in CI or pre-commit workflows with custom policies. Results are best effort: finding nothing does not certify a skill as safe, so human review remains necessary.

Equip AI coding agents with Supabase guidance for databases, Auth, Edge Functions, Realtime, Storage, client libraries, and server-rendered integrations. Install the full collection or individual skills, then use them for session and RLS troubleshooting, schema reviews, migrations, query tuning, and index decisions across many compatible agents.

MarkFlowy is a cross-platform desktop editor for Markdown and general text files, with both source and WYSIWYG editing modes. Its built-in AI features cover assisted conversations, article translation, and summarization, while the file tree, global search, image handling, themes, and custom shortcuts support everyday writing. The application is still in beta and undergoing a reconstruction phase, so users should expect rough edges and slower release activity.

Inspect is an evaluation framework created by the UK AI Security Institute for testing large language models. It includes components for prompt construction, tool use, multi-turn dialogue, and model-graded evaluation, plus more than 200 pre-built evaluations. Researchers can compose these capabilities into tasks and extend the framework through Python packages that add new elicitation or scoring techniques.

Zasper is a Jupyter-compatible IDE for data science and AI work that can run as a web or desktop application. It implements the Jupyter wire protocol, reuses installed kernels across languages, and combines notebook execution with an editor, terminal, launcher, and version-control workspace. The project emphasizes low resource use and many concurrent connections. macOS and Linux are fully supported, while Windows support is limited and the documentation recommends using WSL for the best experience.

PushNotifications is a cross-platform desktop app for testing mobile push delivery. On macOS, Windows, or Linux, users can enter a device token and JSON payload, then authenticate to APNs with either a provider certificate or authentication token, or use an FCM server key for Android. The app automatically saves settings, making repeated notification checks more convenient.

Pluely provides a keyboard-controlled desktop overlay for asking questions, capturing screenshots, and using voice assistance during meetings, interviews, or other conversations. It can connect to preset or custom LLM and speech-to-text providers through configurable requests, while chat history is stored locally in SQLite. Its defining feature is an overlay designed to stay out of video calls, screen shares, and recordings.

Comet organizes coding work into guarded phases from specification through build, verification, and archive, recording state so an interrupted task can resume without reconstructing its history. It also helps create, compose, distribute, and evaluate reusable skills across many coding agents. The CLI requires Node.js 20 or newer.

Dopamine is a desktop audio player focused on making local music organization and listening straightforward. The current Electron-based version runs on Windows, Linux, and macOS, with several package options documented for Linux, including AUR, Snap, RPM, and Pacman builds. It is aimed at listeners who want a dedicated desktop player for organizing and playing their music across their main operating systems.

AgentsMesh provides a control layer for running terminal-based coding agents across a fleet of self-hosted runners. Each agent receives an isolated Git worktree, credentials, branch, and live terminal stream, while a shared console adds scheduling, autopilot, collaboration channels, and ticket tracking. Its BSL 1.1 license requires a commercial license for production use until the stated change date.

NetPad is a cross-platform C# playground for trying snippets, learning language features, and keeping reusable utility or administration scripts without managing full projects. Users can inspect complex output, visualize data, query databases with LINQ or SQL, and add NuGet packages or local assembly references to individual scripts. It runs as a desktop application or in a browser and is positioned as an open-source LINQPad alternative. A .NET SDK version 6 or later is required, with EF Core tools additionally needed for database connections.

Learning Opportunities is a Claude and Codex skill that turns significant coding work into optional 10–15 minute learning exercises. After architectural changes, new modules, refactors, or unfamiliar patterns, it uses prediction, generation, retrieval practice, and spacing to build lessons from the user's own project. The agent pauses for the developer's answers instead of completing the exercise itself, and an optional companion orientation skill can prepare lessons for an unfamiliar repository.

Mattermost Desktop is an Electron client for Windows, macOS, and Linux that keeps access to Mattermost servers in one desktop workspace. It supports a server dropdown, dedicated tabs for channels, boards, and playbooks, desktop notifications, unread badges, deep links, and background operation. The client connects to an existing Mattermost server rather than providing a hosted chat backend, so a server URL is required at first launch.

Leader Key lets macOS users press a chosen leader shortcut followed by nested key sequences to launch applications, control media, manage windows, or run commands. Actions are defined in its configuration and can also be triggered through URL schemes from Alfred, Raycast, shell scripts, or Keyboard Maestro. The project remains free and open source, but its author says development focus has moved to the successor application Tuna, which includes Leader Key functionality.

Open Codex CLI forks the original Codex CLI while adding support for OpenAI, Gemini, OpenRouter, Ollama, and compatible endpoints. It uses the Chat Completions API so users can choose a broader range of models, then runs through a familiar terminal workflow after provider credentials are configured. The project is experimental and may change incompatibly.

CrossPaste synchronizes text, images, files, and other clipboard formats across Windows, macOS, and Linux devices. A Chrome extension can join the same clipboard mesh. Data is stored locally and shared over the LAN with end-to-end encryption, while the built-in OCR extracts text from images on-device without sending screenshots to an external service.