codeocean.com
Searchable repository for finding atmospheric, oceanography and climate datasets and datasets.
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github.com
Code Web Chat is an AI coding tool for VS Code, Cursor, and Antigravity that builds lean markdown prompts from files selected on a file tree. It works with chatbots, APIs, and CLIs, and is described as free, independent, and privacy-first with 100% local operation.
imagecolorpicker.com
A browser-based tool for picking colors from an uploaded image, clipboard paste or URL, returning HEX, RGB and HSL codes. Every color tool is free forever, and a Supporter option removes ads. Processing happens in the browser and no data is sent.
comfy.guide
Comfy.Guide is a collection of computer guides. Its server software section covers self-hosting services such as email, DNS, IRC, Matrix, XMPP and PeerTube. Its client software section covers desktop tasks, including disk encryption, GnuPG, the KISS Linux distribution and using NVIDIA on Linux.
github.com
CompozyOS is an operating system for AI agents that plugs in existing agent CLIs such as Claude Code, Codex, Gemini CLI, and Cursor. The agents split work, hand tasks to each other, run automated jobs and loops, and share one project memory, steered from the browser. The v0.3 line is in beta, and the v0.2.15 product is deprecated.
connectbot.org
ConnectBot is an open-source SSH and Mosh client for Android. It gives access to remote terminals, lets users keep several sessions open and switch between servers, and supports secure SSH tunnels via port forwarding. Sign-in uses a password or SSH key. Mosh helps terminals recover from interruptions but requires compatible server software.
addons.mozilla.org
ContextSearch web-ext is a Firefox browser extension compatible with Firefox 57 and later. It lets users select text to search using the context menu or a tiled popup with any installed search engine. Users can add new search engines via right-click, edit favicons and query strings, and the extension supports both POST and GET requests, with a simple, highly configurable user interface.
codeberg.org
Conversations is an open source XMPP/Jabber client for Android. It offers end-to-end encryption with OMEMO or OpenPGP, file and image sharing, encrypted audio and video calls, private group chats and public conferences, multiple accounts and location sharing, with a Material Design 3 interface. Some features require server support.
convert2video.com
Online converter for turning media files into video formats and web-ready clips.
convertcsv.com
ConvertCSV.com is a collection of online tools for converting CSV and Excel data to and from formats such as JSON, XML, SQL, YAML, KML, GeoJSON, HTML, Markdown and PDF. It also provides a CSV viewer and editor, a CSV validator, SQL querying and data extraction tools. The tools run on the client side, so data never leaves the computer.
orteil.dashnet.org
Browser-based game in which clicking produces cookies, with save import and export options. The page displays a changelog documenting fixes and features such as cookies per second and reworked grandmas.
cookie-editor.com
Cookie-Editor is an open-source browser extension for creating, editing and deleting cookies for the current tab. It lists cookies on the current page, allows creating, editing and deleting cookies, and can import cookies or export them to the clipboard. It is available for Chrome, Firefox, Safari, Edge and Opera.
coolfont.org
An online font generator that offers free fancy fonts for input text. Users can click a desired font and paste the result elsewhere. The site lists many font styles, including bold, italic, monospace, bubble, fraktur, small caps, upside down and strikethrough.
github.com
) - A Nostr client by the Lume team.
marine.copernicus.eu
The Copernicus Marine Environment Monitoring Service provides free and open marine data and services. It offers an ocean data catalogue for downloading or visualising hindcasts, nowcasts and forecasts, along with the Ocean State Report, Ocean Climate Trends indicators, and three ocean visualisation tools for different user levels.
addons.mozilla.org
Copy Selected Links is a browser extension developed by Marnes. It enables users to right-click selected text containing links to copy the URLs of all included links, copy their associated text, or open the links in new tabs. The extension is available for Firefox and Chrome, with its source code hosted on GitLab. Updated versions of related tools from the developer are available on their Greasyfork account.
copychar.cc
CopyChar is a basic application for finding and copying special characters to the clipboard. A character is copied by clicking or tapping it. The listed characters include arrows, punctuation marks, symbols, emoji and keyboard symbols.
ocr.space
Copyfish is an open-source OCR software and text extractor that copies, pastes and translates text from images, videos or PDFs. It runs in Chrome, Edge and Firefox and works on Windows, Mac and Linux. A desktop capture feature requires the XModule2 helper app.
github.com
CopyLinks++ is a browser addon that collects links from all open browser pages, filters the collected links, and copies the filtered results to the clipboard. It is available as a public code repository on GitHub.
github.com
) - A nostr web client
cugir.library.cornell.edu
CUGIR is a repository offering datasets and scanned maps. Datasets can be browsed by theme or found by zooming a map to an area and clicking a search button. Themes include boundaries, geology, agriculture, land cover, transportation, climate and elevation. The scanned maps section provides access to all map holdings.
github.com
Cortex Memory is a production-ready cognitive foundation for autonomous systems such as Embodied-AI and OpenClaw. It provides memory management functionality including extraction, search, and automated optimization, and includes SKILL, CLI, API, MCP, and an insights dashboard out-of-the-box.
cdaac-www.cosmic.ucar.edu
Research data portal for exploring atmospheric, oceanography and climate records, including datasets.
somacon.com
Count Duplicates is a free online JavaScript tool that aggregates pasted lines and shows the count of occurrences of each value. Results include unique values, occurrence counts, the total number of lines and the number of unique values. Output can be copied in TAB or CSV format for spreadsheets. Data is processed client-side in the browser and is not sent or stored elsewhere.