Handy is a free, open source, cross-platform desktop application for speech-to-text transcription. A configurable shortcut records speech, which is transcribed using Whisper or Parakeet V3 models and pasted into the active text field. Processing is local, with no audio sent to the cloud. It is available for Windows, macOS, and Linux.
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Hermes Agent is an open-source, self-hosted AI agent by Nous Research. It is available as a terminal app and as Hermes Desktop for macOS, Windows and Linux, with persistent memory and a messaging gateway for platforms such as Telegram, Discord, Slack, WhatsApp, Signal and email. It is free under the MIT license.
HTTPie is an open-source API testing client for the terminal, also offered as a graphical app for web and desktop in public beta. It is described as making APIs simple and intuitive, and is used for API testing with HTTP servers, RESTful APIs, and web services.
A file-management application for large media collections that browses with tags instead of folders, similar to a desktop booru. It imports files and tags from a hard drive and popular websites, and tags can be shared anonymously through a public server. It supports various image, video and audio filetypes, with playback via an embedded mpv or native Qt player.
Icedrive is a cloud storage service offering 10GB of free storage and paid plans. It provides web, desktop and mobile apps, a drive mounting tool that makes cloud storage appear as a local drive, and zero-knowledge client-side encryption. Plans list storage quotas and file version retention periods.
Icon Gen is a browser-based tool that generates icons from an uploaded logo for web, mobile, desktop, social media, ICO files, and browser extensions. Users upload a JPG or PNG file up to 10MB, select an application type and generate icons.
iLovePDF is an online service for working with PDF files that offers tools for merging, splitting, compressing, converting, rotating, unlocking and watermarking PDFs, among other tasks. The service has been available since 2010, and mobile and desktop applications are also offered.
Spicy Lyrics is a Spicetify extension that replaces Spotify's lyrics view with a word-by-word display that lights up as each word is sung. It offers community lyric uploads and syncs, customizable settings and works with the desktop Spotify app on Windows, macOS and Linux.
Interview Solver is a technical interview preparation platform and AI copilot for software engineering candidates. Its native desktop application for macOS and Windows provides real-time, screen-sharing-invisible assistance during live coding interviews, including LeetCode-style problem solutions, system design diagrams, voice transcription, and answers tailored to a user's resume or job description.
IOGraph is a free application that turns mouse movements into images. It runs in the background during ordinary computer use, and after a while the recorded mouse paths can be saved as a picture. A macOS version is offered for download, with other versions on GitHub Releases.
IPTVnator is a cross-platform open-source IPTV player supporting M3U/M3U8 playlists, Xtream Codes API and Stalker portals. It is available as a desktop app and as a self-hosted PWA in the browser. Features include an XMLTV program guide, live TV, movies and series, offline downloads, recordings and a phone remote. It is free and open source for Windows, macOS and Linux.
jamovi is a free and open statistical spreadsheet designed to be easy to use and powered by the R statistical language. It offers a familiar spreadsheet interface with analyses such as t-tests, ANOVA, and regression, plus publication-ready plots. It is available as a desktop application and as a browser-based cloud version.
Edit subtitles with an open source desktop application.
JupyterLab is an extensible notebook authoring application and editing environment within Project Jupyter. A notebook combines code, text descriptions, data and visualizations. JupyterLab provides an environment for prototyping and explaining code, exploring and visualizing data, and sharing ideas. It is a sibling to Jupyter Notebook and Jupyter Desktop and is described as offering a more advanced, customizable experience than Jupyter Notebook.
Kando is a cross-platform pie menu for the desktop, described as an alternative way of interacting with a computer. It can be used to launch applications, simulate keyboard shortcuts and open files. It is designed for mouse, stylus, touch or controller input and can also be controlled with a keyboard. It runs on Windows, macOS and Linux, and an example menu opens with Ctrl+Space on most platforms.
Kasm Workspaces is a platform that streams applications, desktops and web resources to a web browser. It covers remote browser isolation, Desktop as a Service and OSINT workloads. Editions include Community, Starter and Enterprise.
KeepingYouAwake is a small macOS menu bar utility that prevents a Mac from entering sleep mode for a predefined duration or as long as it is activated. It wraps Apple's caffeinate command line utility and requires macOS 10.13 or newer. It only prevents sleep on desktop Macs and portable Macs with an open lid.
keepthis.site is a personal bookmark manager. Links are saved with screenshots, instant full-text search and end-to-end encrypted sync between a user's devices. A Firefox browser extension saves the current tab, and the app works offline. Desktop versions are offered for Mac and Android.
KeyCombiner is a web service for organizing, learning, and practicing keyboard shortcuts. Users can import shortcuts from a public database into personal collections, practice them with spaced repetition, and take curated courses and lessons. A desktop application offers instant shortcut lookup on Windows and Linux.
Komikku is a free Linux desktop application for discovering and reading manga and comics. It supports online and offline reading from multiple sources, local series in formats including CBZ, CBR, CBT, EPUB and PDF, and offers features such as series tracking, automatic chapter downloads, and multiple reading modes.
Kompad is an open-source note-taking application targeted at technical users. It supports desktop, web, and mobile web versions, with its source code hosted in a public GitHub repository under the hudy9x/kompad namespace.
Koofr is a cloud storage service offering tools for file organization, productivity and online collaboration. It is accessible through the web, desktop, mobile, WebDAV protocol or Rclone, without individual file size or file type limits. Koofr Vault is described as an open source, client-side, zero-knowledge encrypted storage application by Koofr.
KOReader is a document viewer and ebook reader application for E Ink devices. It supports formats including EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP. It runs on Kindle, Kobo, PocketBook, Android and desktop Linux.
KRESKA.art is a free online drawing and painting app that runs in a browser with no installation. It offers a proprietary painting engine and a library of more than 180 handmade brushes in 12 categories. Features include a reference preview button with color picker, reference opacity slider, and auto-color tracing.