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Published directory entries matching your search.
FlagLookup.com is a searchable flag database for identifying flags by visual features such as colors, symbols, shapes and patterns. It covers country and US state flags, allows exploring color combinations and searching by shapes and patterns, and turns flag sets into interactive quizzes.
Flashka is an AI-powered study application that transforms user-uploaded notes, PDFs, lecture slides, and recorded audio into learning materials. Its features include AI-generated flashcards, spaced repetition scheduling, quizzes, mock exams, study plans, lecture transcription, mind maps, oral exam practice, case studies, and image occlusion tools. An integrated AI tutor provides support, and users can request material edits via an in-app chat.
FlexML is an AutoML library for Python that assists in building machine learning models by automating model selection and hyperparameter tuning. It supports regression and classification tasks and offers quick and wide experiment modes for choosing how many models to train.
Fluent With Stories offers Spanish short stories graded by CEFR level from A1 to B2. Each story is written by a native speaker and includes native audio, English translations, key vocabulary, a comprehension quiz, flashcards and a writing practice. Stories are designed for reading and listening practice.
FlyBase is a database of Drosophila genes and genomes. It offers search and browse tools including QuickSearch, QueryBuilder and CytoSearch, genomic tools such as BLAST and JBrowse, and a Feature Mapper that supports D. melanogaster and allows results to be exported to a HitList or downloaded as GFF.
Browser photo editor for quick image edits, design work, and visual content adjustments.
Free Edu Mail provides temporary or disposable email addresses for quick signups and inbox testing.
Freetempmail provides temporary or disposable email addresses for quick signups and inbox testing.
The Front End Interview Handbook provides free interview preparation resources for busy engineers, including quiz questions, JavaScript coding questions, algorithms questions and front end system design questions. The content is updated for 2026 and is community-vetted. The site states it is completely free to read.
Games for the Brain is a browser-based collection of quiz, memory and brain games intended to train thinking. Its catalogue includes puzzles such as Sudoku, Reversi, Minesweeper, Mahjongg Solitaire, Checkers and Chess as well as word games. The site is available in multiple languages.
Games by Will is a collection of browser games by Will Juseck, including Terminal, Capital Punishment, Math Blitz, Never Enough, 25th Amendment, Redundancy, Renter's Revenge, and The Lich's Dungeon. The games span genres such as strategy, horror text adventure, geography quiz, arcade speed math, satirical strategy, political strategy, narrative strategy, and fantasy roguelike.
Geometas is a site for finding GeoGuessr metas from Google Street View around the world and testing knowledge with quizzes. It lists metas by categories such as bollards, cars, license plates and street signs, and by regions including the Baltics, Nordics, Eastern Europe and Latin America. It also offers basic GeoGuessr tips and is described as free to use.
Giselle is an open source AI app builder hosted on GitHub under the giselles-ai organization. It is designed for building applications using AI, with repository documentation covering introduction, quick start, features, use cases and usage instructions.
Gizmo is an AI-powered learning application. Users input the material they are learning, and the tool's AI converts it into flashcards. Quizzes use gamified elements, spaced repetition, and active recall techniques to support learning retention.
Gnumeric is an open-source spreadsheet program. The project states that it starts up quickly and handles large spreadsheets while remaining responsive. Its source code is available under the GNU General Public License version 2 or version 3. The site also lists release notes and resources such as a user's manual and mailing list.
GraphicsGale is an animation graphic editor developed by HUMANBALANCE Ltd. It supports spriting and pixel art, with real-time animation preview, multiple layers and onion skinning. It can export frames to a sprite sheet, separate image files or a single GIF, and includes TWAIN imaging support for scanners and cameras. Tools include palette control, selective color erasing and quick color replacement.
Haruna is an open source media player for KDE with configurable options. It can play online videos through youtube-dl, supports YouTube playlists, and allows playlists to overlay the video when toggled by mouse-over. It also offers auto-skip for chapters containing certain words, configurable shortcuts and mouse buttons, and a quick jump to the next chapter by middle-clicking the progress bar.
HKMDB — Click the button below to complete a quick verification (takes 5–15 seconds). Once done, you'll have full access.
An online interactive HTML cheat sheet page containing code examples, web developer tools and markup generators. It includes panels for color, character and tag references, structures and attributes, plus generators for iframe, table, link, image and list markup, and a live-preview HTML editor. The pages are described as a quick guide for those already familiar with the languages.
hwchase17/langchain is a GitHub repository for LangChain, an agent engineering platform. The repository hosts resources related to the LangChain ecosystem, including quickstart guides and documentation for users and developers working with the platform.
HydraPaper is a wallpaper management application. It manages wallpaper collections with folders that can be enabled or disabled, and marks favorites for quick access. Wallpapers can be set as zoomed, centered or fitted, with a black or blurred background, and random wallpapers can be set quickly. It is written in Python 3 and GTK and released under the GPL3 license.
Hysteria is an open-source, MIT-licensed proxy built on a customized QUIC protocol, designed for performance over unreliable and lossy networks. It supports modes including SOCKS5, HTTP Proxy, TCP/UDP Forwarding, Linux TProxy and TUN, and the protocol masquerades as standard HTTP/3 traffic. Builds exist for major platforms and architectures.
A first-person essay by former writing and literature teacher Victoria Livingstone describing why she left teaching, citing students' reliance on large language models such as ChatGPT for drafting and revising written work. The piece discusses pedagogical attempts to address AI use and the difficulty of evaluating AI-revised text.
Ichigo's Sheet Music is a collection of free sheet music from anime and game titles. It offers arrangements for piano, violin, and voice, as well as larger scores for orchestra. The site provides a quick search and browsing by the first letter of a title. It reports a total of 4,317 sheets.
