HelixNotes is a local markdown note-taking app that keeps notes as plain .md files in a folder on the user's disk. It offers a rich editor with a source mode, a tasks view collecting checklist items, and a graph built from wiki links. It is free and open source under AGPL-3.0, with no account, and runs on Linux, Windows, macOS, Android, iPhone and iPad.
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Heylo is a platform where group leaders organize events, communications, payments and sponsorships in one place. It provides event creation, RSVPs, attendance and member onboarding, with dues, paid tickets and donations. The service is free to start and also has web and iOS and Android apps.
Home Depot is an iOS 8.4.1 32-bit Mixtape Player for older iPhones, installed via Cydia Impactor. The Mixtape Player supports any iPhone, iPad or iPod touch on iOS 9.0-11.0, while the Cydia install option covers select older devices on iOS 8.4.1. Version 1.1 beta 1 adds themes and fixes the captcha download issue.
Instafel is a modular, open-source suite for customizing the latest Instagram Alpha APKs, organized into subprojects including an app interface, patcher, patcher core, OTA update manager, website and GPlayAPI. The project states it is not affiliated with Meta or Instagram and is intended for educational use only.
Internxt is a cloud storage service that encrypts files before they leave the user's device using zero-knowledge AES-256 encryption. The code is published on GitHub for independent review. A free plan offers 1 GB of encrypted storage, and paid plans are advertised starting at €9.99 per month. Apps are offered for Linux, Windows, macOS, iOS, Android and the web.
iOS Console Emulators is a Reddit community or thread with discussion, guides, updates, or shared resources.
iOS Settings URLs is a code project with source, releases, documentation, or setup notes.
iyox-Wormhole is a code project with source, releases, documentation, or setup notes.
JellyBook is a code project with source, releases, documentation, or setup notes.
Joplin is a free, open-source note-taking and to-do application that organises notes into notebooks. Notes are stored in Markdown and are searchable, taggable and editable, with offline-first access, end-to-end encryption, plugins and themes, and sync via services including Nextcloud, Dropbox, OneDrive and Joplin Cloud. Apps exist for Windows, Linux, macOS, Android and iOS, plus a Firefox and Chrome web clipper.
Joplin is a privacy-focused note-taking application with built-in sync capabilities. It is available for use on Windows, macOS, Linux, Android and iOS platforms. The project is open source, hosted on GitHub, and accessible to both end users and software contributors.
JustSketchMe is a browser-based character posing tool for artists, using 3D models, props, lighting and a pose library to build pose references. It also offers exporting screenshots and 3D models. Apps are listed for iOS, Android, Mac and Windows. The project is free, with a Pro tier available via subscription.
Kalker is a scientific calculator application that supports user-defined variables and functions, ambiguous input syntax, differentiation, integration and complex number calculations. It runs natively on Windows, macOS, Linux and Android, and operates in web browsers via WebAssembly. The tool uses math-like syntax for input and supports sum calculations alongside standard and advanced mathematical operations.
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.
Koel is an open-source music streaming server that lets users host and stream their own music. It includes media management for uploads and metadata, Subsonic and OpenSubsonic API support, and iOS and Android apps. The Community version remains free and open-source; a paid Koel Plus version adds features such as individual libraries and storage drivers.
Koinpark is a crypto exchange in India for buying, selling and trading 250+ cryptocurrencies. Users can start with ₹100 and deposit INR via UPI, IMPS, NEFT and RTGS. The platform offers a mobile app for Android and iOS, address whitelisting, an anti-phishing code, and public REST API documentation.
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.
LangX is a language exchange app for practising with native speakers who are learning the user's language. Users see people who speak the language they are learning and are learning theirs. Messages can be held to receive corrections, and a feed allows sharing moments and asking for corrections. It is free, open source and without ads, and is available on iOS, Android and web.
Android emulator focused on running mobile games and apps on Windows PCs.
Legacy-iOS-Kit is a code project with source, releases, documentation, or setup notes.
Lemmy is a decentralized discussion platform for communities. Posts can be upvoted or downvoted and support threaded comments. It consists of interconnected servers and can be self-hosted via Docker or Ansible. It offers apps for iOS, Android, desktop and web and is open source.
libimobiledevice is a cross-platform free software library written in C that implements native protocols for communicating with iPhone, iPod Touch, iPad and Apple TV devices running iOS, without jailbreaking. It includes command-line utilities and has been built and run on Linux, Mac, Windows, Android and embedded ARM SoCs.
Librera Reader is a customizable Android application for reading books in formats including PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ and CBR. It offers document discovery via auto-scan, an in-app file explorer and recent lists, plus bookmark, annotation and EPUB3 table-of-contents support. Features include day and night modes, dictionaries, customizable text-to-speech, a media player, multi-word search and a Musician's mode.
Liftosaur is a workout tracker and planner for iOS, Android and the web. Users build custom lifting programs with the text-based Liftoscript language or follow built-in routines such as GZCLP, 5/3/1 and PPL. The app logs sets and reps, tracks progress and stores data in the cloud. A web editor allows programs to be edited on desktop and shared by link.