The JRC Data Catalogue is the data catalogue of the European Commission Joint Research Centre. It provides access to 4315 datasets and 257 collections covering topics including environment, energy, climate change, and agriculture. The platform offers SPARQL search, a catalogue API, and links to related EU data resources.
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JuMLi provides automated feedback on RimWorld modlists. Users export their modlist from RimSort to the clipboard, paste it into a text field, and submit it; the site then presents notes on the list. The page advises using RimSort rather than in-game sorting or RimPy.
Jumpstick is a guide for discovering interesting websites through curated topic collections. Users select a topic and click a jump button to explore sites, and a Chrome extension is offered.
Searchable repository for finding atmospheric, oceanography and climate datasets and datasets.
JWildfire is a video tool for editing, effects, stock footage, animation, 3D, or creator workflows.
Kettu is a Discord mobile app client modification described as continuing Bunny's mission. It is written mainly in TypeScript and published on Codeberg, where installation instructions cover Android via Xposed or KettuManager and iOS via KettuTweak. The repository also includes build steps using bun.
Kilo is an open source AI coding agent for VS Code, JetBrains, CLI, desktop and cloud. It offers access to 500+ models at zero markup, bring-your-own keys, or local models for privacy. Kilo Gateway provides a unified API to access AI models through a single endpoint.
Kingston Data is a site from the Royal Borough of Kingston upon Thames Council that gathers local data and information for insight into the borough and comparisons locally and nationally. It offers a ward profile search by postcode or ward name or map click, plus themes including population, children and young people, health and social care, housing, crime and community safety, deprivation, economy and employment, and environment.
Video clipping tool for creating short clips from longer recordings or streams.
The KNMI Data Platform (KDP) is an open-access repository for datasets maintained or generated by the Royal Netherlands Meteorological Institute (KNMI), covering weather, climate, and seismology topics. It replaced the KNMI Data Centre in 2020. All datasets are free to use, with metadata browsable on the platform website and data accessible via APIs including Open Data, WMS, and EDR APIs.
Knots 3D is a reference platform with over 200 animated knots and step-by-step tutorials. Its library covers categories such as climbing, fishing, sailing, camping, and scouting knots, with user reviews cited on the site. The site warns that users should verify tying technique with a skilled instructor where knot failure could cause property damage, injury, or death.
Konvert is a browser-based image format converter. It converts HEIC, WEBP and AVIF images to JPG. The site states that conversion happens client-side, so files do not leave the device, and that there are no restrictions or accounts.
Koala AI is an AI SEO platform. It includes an SEO agent that plans from Search Console data, a writer that drafts on-brand articles, and one-click publishing to a CMS. It also bundles KoalaChat, KoalaImages, KoalaLinks and KoalaMagnets. KoalaLinks is an internal linking tool that works with WordPress, Shopify, Webflow, Ghost and custom sites.
Konversation is a user-friendly Internet Relay Chat (IRC) client providing access to standard IRC networks such as Libera. It supports platforms including Linux, Windows and FreeBSD, offers a graphical interface, and allows sending and receiving files through DCC support. It is highly configurable and includes features such as command aliases, embedded terminal and multiple identities.
Krugle is an agentic AI platform developed by Krugle Inc. Its Krugle-AI system can understand and autonomously process unstructured data and Excel files, features unique pre-treatment functionality, and integrates two platforms to serve client use cases.
Browser video editor for quick cutting, arranging, and exporting clips online.
Lambda offers hourly rental of NVIDIA H100, H200, B200, and A100 GPUs through a self-serve interface, with instances launchable via UI, API, or CLI. Users can train, fine-tune, and serve models on one to eight GPU instances and pay by the minute, with no egress fees.
Research data portal for exploring atmospheric, oceanography and climate records, including datasets.
LAPaL, the Long-Acting Therapeutics Database, provides access to a collection of long-acting therapeutics data covering technologies, compounds, formulations, patents and national registrations. The site includes sections to browse content, submit technologies, view news, explore the therapeutic landscape, access clinical trial and regulatory status information, and use an HIV-focused dashboard, with user login functionality available.
A free interactive Perl tutorial for people who want to learn the Perl programming language quickly. It has no downloads; users click a chapter and follow the instructions. Chapters cover topics such as Hello World, variables and types, scalars, arrays, hashes, conditional decisions, loops, operators, references, subroutines and regular expressions.
Lemonade Server is a lightweight, open-source local LLM server for running and managing multiple AI applications on a local machine. It provides a simple CLI for managing applications and supports various LLMs, and offers endpoints compatible with OpenAI, Ollama, Anthropic and others, plus a local-first API and MCP gateway.
Let's Encrypt is a free, automated, and open Certificate Authority operated by the nonprofit Internet Security Research Group. It provides free TLS certificates so websites can enable HTTPS encryption; obtaining a certificate requires demonstrating control over the domain, and issuance uses the ACME protocol with client software.
A collection of help guides for the Libera.Chat IRC network, covering connecting, client choice, webchat, account registration and management, channel creation and moderation, cloaks and user modes. The material is aimed at users and channel operators on the network.
LibreSprite is a video tool for editing, effects, stock footage, animation, 3D, or creator workflows.