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A tutorial site presenting basic principles of Japanese grammar and usage for learners who think in a Western language. It compares and contrasts English and Japanese grammar rather than relying on memorized patterns, and Japanese examples are written in romaji rather than kana and kanji. Topics include verbs, particles and sentence structure.
Learn Na'vi is a resource for the constructed Na'vi language from James Cameron's Avatar. It offers a Na'vi-to-English vocabulary section, pronunciation and grammar information, and a reference library including the Na'vi Dictionary. The site hosts forums and a Discord server with scheduled online classes. It has existed since 2009, and its content is based on the work of language creator Dr. Paul Frommer.
LearnPython.org is a free interactive Python tutorial intended for everyone who wishes to learn the Python programming language, whether experienced or not. It offers chapters on basics and advanced topics, organized in sections such as Learn the Basics, Coding for Kids, and Advanced Tutorials. The site is supported by DataCamp.
Learn Shell is a free interactive Shell tutorial for people who want to learn Shell. It offers chapters covering basics such as variables, arrays, operators, decision making, loops and functions, plus advanced topics including special variables and regular expressions. The site states it is intended for everyone who wishes to learn programming with Unix/Linux shell interpreters.
Learn X in Y minutes is a community-driven site offering brief tours of programming languages, plus frameworks and libraries, tools, and algorithms and data structures. Language pages are available in numerous translations, including English, French, German, Spanish and Chinese.
Ledger is a crypto wallet product line that lets users secure crypto assets such as Bitcoin, Ethereum, XRP and Monero. The site presents the Ledger Atom touchscreen signer and the Ledger Nano Classics, and states that Ledger manages over 15,000 crypto assets daily.
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.
A personal collection of solutions to LeetCode problems written in C++23, Java, Python, MySQL, and TypeScript. The site aims to provide readable code with consistent style. Solutions can be found by searching by number or title. The repository does not accept pull requests, though forking is allowed.
Lengualytics is a tool for learning languages with comprehensible input. It lets users track hours spent on YouTube, reading, gaming and podcasts, and offers detailed analytics of comprehension progress. The site states it does not teach a language itself. Free to start.
A visualization tool from LeoLabs showing satellites, debris and other objects tracked by LeoLabs in low Earth orbit. The site provides a full-window view of this low Earth orbit visualization.
Leprd is a free web host for hobbyists. Applicants must be at least 13 years old, and only one active account is allowed per person. The site must be up within two weeks of application acceptance, and the hosting is primarily for PHP and MySQL (MariaDB) with options for multiple PHP versions.
The Lesbian Poetry Archive is a website presenting an archive related to lesbian poetry. Its menu offers archive, resources, about and contact sections, and links to books, journals and a bibliography. The site is by Julie R. Enszer and is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Let's Play Sega lets visitors play Sega Genesis and Mega Drive classic games online in a browser. The site lists titles such as Sonic, Star Control, Snake Rattle 'n' Roll and MUSHA, and mentions Sega Retro Classics and new hacked ROMs. A help page states that games cannot interface directly with USB controllers and suggests third-party helper software.
Lethal is a card puzzle game in which the player tries to win in one turn. The site offers a daily puzzle, an archive of past puzzles, and a way to submit puzzles; a full version is listed on Steam as available to wishlist.
Let's Play Index is a YouTube channel database that organizes video game-related content from channels of varying sizes. It ranks gaming channels into categories and provides statistics to aid discovery of new and upcoming talent. Users can submit their channel URL to be added. The site also lists popular games on YouTube ranked by views, video counts and weekly uploads.
Lex is an AI-powered word processor with collaborative documents and AI editing tools including feedback, comments, versions and title ideas. The site states it is no longer accepting new customers, and existing accounts keep working. Track Changes is listed as coming soon. Pricing information is for existing users only.
LexiLogos is a free online resource offering dictionaries in every language, along with maps and documents of every country. It also provides a multilingual keyboard and pages about countries. The site lists language dictionaries covering many languages and language families.
libcom.org is a volunteer-run archive of texts on anarchist and libertarian communist history and organizing, offering material on strikes, revolutions and movements. It also provides practical resources such as an introduction to work and a guide to setting up an anti-raids group. The site is funded entirely by volunteers and offers its archive free of charge.
Libera.Chat is an IRC network for collaboration on free and open source software projects. Its site publishes a bot and LLM policy update, addressing unsupervised LLM-driven bots on the network and announcing planned policy additions for 2026-05-30. It also provides a frequently asked questions guide covering accounts, channels, bans and staff contact.
Library Genesis search site for finding books, papers, academic files, and document records.
Libib is a cloud-based library management and circulation system for schools, organizations and individuals. It supports cataloging of books, board games, movies, music and video games, with barcode scanning and cloud sync across devices. Users can create and share collections, add tags and notes, and import or export data. The site lists Basic, Pro and Ultimate plans.
Libraire is a personal AI library that produces book summaries in five styles, plus video insights, audiobooks and podcasts. Users supply a book, choose a summary style, and can read, export or revisit the result. The site mentions a 7-day free trial with 2 summaries, no credit card, and cancellation anytime on paid plans.
A site that serves the version 5 KiCad libraries, providing schematic symbol libraries, PCB footprint libraries and 3D model data. The archived libraries are described as old, out-of-date and no longer maintained, with newer versions available from the KiCad website and GitLab. Users can clone the libraries with Git or SVN to receive updates.
LibreCrawl is a free, open-source SEO crawler offered as an alternative to Screaming Frog. It performs technical audits covering meta tags, schema markup, hreflang, social tags and PageSpeed metrics, and integrates Playwright for JavaScript rendering of single-page applications. The project is MIT-licensed and can be self-hosted, with CSV, JSON and XML exports. A REST API provides programmatic control of crawls.
