openHAB is a vendor- and technology-agnostic open source automation software for the home, developed in Java on Apache Karaf. Its pluggable architecture supports over 400 technologies and thousands of devices, with rules driven by time, events, scripts, actions, notifications and voice control. It runs on Linux, macOS, Windows, Raspberry Pi, Docker and Synology, and is accessed through web, iOS and Android apps. It runs on local hardware without requiring cloud services.
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OpenRefine is a free, open source tool for working with messy data. It enables users to clean data, transform it between formats, and extend it with web services and external data. All data processing occurs locally on the user's machine rather than in cloud services. Key features include faceting to drill through large datasets, clustering to fix inconsistencies by merging similar values, reconciliation to match datasets to external databases, infinite undo/redo functionality, and support for contributing to Wikidata and other Wikibase instances.
Orange is a cross-platform desktop application for searching local files. It offers tokenization and auto completion, monitors file system changes in real time, and provides millisecond-level search with low memory and CPU resource usage.
Osaurus provides AI agents that run locally on a computer rather than in a cloud. Agents work from files, keep memory on the computer, and request approval before editing files. A privacy filter can remove identifying details before cloud use. Osaurus is free and MIT licensed; Workspaces starts at $20 per workspace per month.
Osintracker is a browser-based OSINT investigation platform. It maps entities and their relationships in an interactive graph and stores all investigation data locally. Users can run matched OSINT resources and import connector results to expand the graph, then export to HTML, Markdown, CSV, JSON or PNG.
Open Source Society University (OSSU) is an open education initiative that provides free self-taught college-level curricula. It offers structured learning paths for Computer Science, Mathematics, Data Science, and Bioinformatics, plus localized versions for Brazilian and Chinese learners. All resources are freely accessible with no cost to users.
Wordy is a writing tool for drafting blog posts and private notes. Documents are stored locally, with optional account sync, and can be published as a link or public page. The tool supports adding images and galleries. The site states it is free, open source and without ads or subscriptions. Email newsletters, publishing from Notion and blog search are listed as coming soon.
PasteBar is a free, open-source clipboard manager for Mac and Windows. It stores clipboard history and custom clips locally on the device and provides quick-access paste menus, with collections, tabs and boards for organizing copied content.
PDFEncrypt is a free, open-source native Windows app that encrypts PDF files using standard PDF encryption algorithms. Users specify a password required to open the document along with options and permissions for the PDF. Encryption runs locally on the Windows PC rather than uploading files to a third-party server. The app uses the iTextPDF library and is released under the AGPL license.
The Peacock Project is a replacement for HITMAN's servers that runs locally on the user's machine. It is described as fast and easy to set up, requiring ownership of the game, and features monthly custom content.
Permapeople is a platform for growing food, centred on a crowd-sourced plant database, an open marketplace and garden design tools. It also offers a garden journal and knowledge sharing, with the stated aim of supporting local food production and regenerating the environment.
personalDNSfilter is a DNS filter proxy written in Java. It hooks into domain name resolution and returns the loopback address for filtered hosts. It supports secure DNS via DOH and DOT and is available for Java enabled devices including Android, with and without VPN. Filtering is local and works with any upstream DNS server.
Petmate is a cross-platform C64 PETSCII image editor that runs locally on Mac, Windows and Linux without an internet connection. It supports drawing operations, multiple screens with undo stacks, and import or export of PETSCII formats including PNG, .c, .prg, .asm and .d64.
Photon is a cross-platform file transfer application built with Flutter. It shares folders, files and text, supports folder sharing that preserves directory structure, and works between devices on the same local network or mobile hotspot without an internet connection.
Piano Scribe is a web application that converts raw audio to MIDI using Onsets and Frames, a neural network trained for polyphonic piano transcription. Users can record themselves playing piano or choose a solo piano audio file from their device. All processing happens locally in the browser using Magenta.js and TensorFlow.js.
Picasso is a tool that turns simulator screenshots into App Store screenshots. It adds device frames, supports localization via a strings file, and can upload screenshots to App Store Connect. The editor requires no design experience, and the app supports over 40 device frames and every Apple platform. It requires iOS 17 or macOS 14 (Sonoma).
Picturama is a digital image organizer. It scans local files and browses photos by date, with detail views, EXIF information, tags, favorites, and rotate, tilt and crop tools. The original images are not modified. It supports JPG, PNG, TIF, WebP and HEIC/HEIF, and raw formats only on Mac and Linux. It is free and open source under the MIT license.
Pikimov is a free web-based motion design and video editor that combines a classic editor with 2D and 3D compositing editors. Editing happens locally in the browser, so files are not uploaded to a server. It supports up to 4K resolution and does not require sign-up.
Pilko Studio is a local in-browser video screenshot extraction tool. It supports interval, manual and automatic frame capture with timestamps, and offers configuration options including JPEG and WEBP quality adjustment, video trimming, cropping, timecode or overlay addition, and framerate override for exported screenshot frames.
Browser-based tool that scales pixel art images to larger or smaller sizes without blurring. It offers several pixel art scaling algorithms, including cleanEdge, hqx and xBR, and processes images locally without uploading them. Animated GIFs are not supported; only the first frame is scaled.
Playnite is an open source video game library manager that aims to provide a unified interface for all games. It links games from services such as Steam, Epic, Origin, GOG, Battle.net and Ubisoft Connect, and supports console emulators. Its appearance can be customized with themes, and plugins and script extensions extend its functionality. It runs from portable storage and stores library information locally.
A GitHub topic page collecting 8 public repositories tagged mov-cli-plugin. The listed plugins cover watching YouTube, films and shows, Jellyfin or Plex media servers, local music and video files, and anime.
Podman Desktop is an open source graphical tool for developing on containers and Kubernetes. Available on Linux, macOS and Windows, it lists, searches, runs and stops containers, builds and pulls images, and starts pods. It supports OCI and Compose standards and can spin up local Kind or Minikube clusters.
Transparency portal on local politics in Germany.