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A Python framework for building LLM-powered applications through a multi-agent paradigm. Developers set up agents, equip them with optional components such as LLMs, vector stores and tools, assign tasks, and have them exchange messages to solve problems. It works with practically any LLM and does not use LangChain.
LanguageMap is an interactive world language map that shows where each language is spoken and how languages are related. It includes a daily guessing game and indicates that 877 of the 8,238 languages listed by Glottolog are on the map so far.
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.
Laoshi is a Chinese language learning service built around smart flashcards and a spaced repetition system for studying Mandarin vocabulary and characters. It offers practice in reading and writing in the app, ready-made HSK word lists, goal setting and progress tracking. A family of digital tools includes a classroom, dictionary, grammar library, pinyin converter and Chinese name generator.
Late.sh is a terminal-first social application that can be used from any SSH client, called by its authors a command-line clubhouse for computer people. It includes real-time global chat, music streaming, terminal games, tech news, profiles and a shared event board. The code is described as source-available, not OSI open source, during the FSL protection period.
Later is a Mac menu bar app that saves and restores a workspace. It lets users close windows and reopen them later, at a destination or after scheduled minutes or hours. The listed uses include saving battery, tidying the desktop for screensharing and preparing for Zoom meetings.
LaTeX-OCR converts an image containing a formula to corresponding LaTeX code. It includes a user interface written with PyQt5 and is installed through a Python environment with PyTorch. A standalone version is planned, and an AppImage for Linux is in development.
Telegram channel described as the official release channel for Lawnchair, offering downloads of the latest alpha builds and a place to test new features. The channel also points to separate support, setups and announcements channels.
Lazarus is an open-source cross-platform IDE for Rapid Application Development powered by Free Pascal. It is Delphi compatible and includes a drag-and-drop form designer and over 200 components, and can convert from Delphi code. It is extendable through packages and has a package manager with an online repository. Documentation and tutorials are available through a wiki, forums and books.
LazyLibrarian is an application for ebooks, audiobooks and magazines, described as similar to SickBeard, CouchPotato and Headphones. The GitLab project page shows the repository, licensed under GNU GPLv3 and created on November 10, 2018.
Android emulator focused on running mobile games and apps on Windows PCs.
An R package that creates interactive Leaflet maps using the Leaflet JavaScript library and htmlwidgets. Maps can be used from the R console, RStudio, Shiny applications and R Markdown documents. It is linked to the open-source Leaflet JavaScript library for interactive maps.
Leak-awareness search page for checking whether identifiers appear in exposed datasets.
LeakPeek is a search service for checking whether an email, username, phone number or password has appeared in a data breach or password leak. It also offers searches of US and UK public records and a face search of public websites. Membership plans range from a 24-hour trial to three months of access.
LeanCTX is an open-source context gateway that sits between AI tools and the information they read. It selects task-relevant context, applies supported access and content controls, and records observable context operations and evidence. The engine can run locally through CLI, MCP, hooks and proxy paths, and an SDK embeds supported engine capabilities in applications.
A free Next.js course that teaches building a full-stack dashboard web application step by step. Across 15 chapters it covers styling, fonts and images, layouts, navigation, databases, data fetching, rendering, streaming, search and pagination, mutating data, errors, accessibility, authentication and metadata.
LearnClash is a quiz duel app in which players face a real opponent 1v1 on general knowledge or a chosen topic. Every answer is explained, and missed questions return after 7 days. Duels are turn-based with a 72-hour window per turn. Duels, explanations and missed-question reviews are free, with no ads.
An introductory machine learning course taught by Caltech Professor Yaser Abu-Mostafa, recorded from a live broadcast and available as a free online MOOC. It covers basic theory, algorithms and applications across 18 lectures, with homework sets and a final exam. Prerequisites are basic probability, matrices and calculus.
Ledger Insights is a news site covering enterprise blockchain, offering ideas and news for enterprise blockchain builders on permissioned and public distributed ledger technology use cases and digital currencies. It reports on banks, tokenization, stablecoins and capital markets applications.
Leeds Trinity University is a higher education institution with campuses in Horsforth and Leeds city centre, offering undergraduate, postgraduate and apprenticeship courses. It opened in 1966, was named University of the Year for Student Experience 2027 by The Times and The Sunday Times Good University Guide, and ranked top in the UK for overall student satisfaction based on the 2026 National Student Survey positivity score.
Left on Read is a macOS desktop app that provides analytics and productivity tools for text messages, including revisiting messages, group chats and words of the year. It can schedule messages, send response reminders and manage an inbox. Texts are analyzed locally, and the software is open-source and runs offline. It is free to try.
Legacy-iOS-Kit is a code project with source, releases, documentation, or setup notes.
Legcord is a free, open-source Discord client for Windows, macOS, and Linux. It runs the official Discord web app inside an optimized Electron wrapper and includes built-in themes, client mods, and tracker blocking. It supports x64 and AArch64 devices, with Wayland and X11 on Linux and native screensharing on Mac.
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.
