Peer-to-peer chat app for private text and video conversations without central accounts.
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Chord Player is a free browser-based chord progression app from OneMotion. It offers common chords and styles, a scale and key selection, chord voicing and playback options, and export to MIDI or WAV.
Chordbook offers online web apps for learning guitar chords, scales and tuning. Users can select electric or acoustic guitar and left- or right-handed play, and the site includes beginner guitar video lessons. A MyChords feature saves selected or created chords for later playback.
Chromatone is an open source research and design project for visual music education, communication and performance. It presents a color coding system linking notes, intervals, chords and scales, and offers web apps for music education and independent research, plus tutorship and a sticker shop.
Chrome Mask is a Firefox browser extension that lets users toggle a setting to make Firefox appear as Google Chrome to websites that block Firefox access. Unlike generic user agent spoofing extensions, it only applies the Chrome user agent to user-selected specific sites rather than all sites, and automatically updates the Chrome version it pretends to be.
Chromium Hardening Guide is a setup guide for using a Chromium-based browser with flags and policies. It covers selecting a browser, applying policies and persisting flags, with primary focus on Linux and Windows and notes for Android and MacOS where applicable. Configuration files can be generated by an automated script or edited by hand.
Cie's IPAs is a Telegram link for updates, app posts, files, or community notices.
CircleToSearch is an Android app that performs reverse image search by circling content on the screen, with support for multiple search engines including Google Lens, Bing, Yandex, TinEye, ChatGPT and Perplexity. It offers offline OCR text recognition, offline QR detection and works on devices running Android 10 or later without Google Play Services.
The City of Saskatoon Open Data Site is a municipal catalogue publishing City of Saskatoon data for analysis and applications. The City states it is investigating formal open data licensing and currently offers a broad license to use published Information. It does not warrant or guarantee the accuracy or completeness of the Information, and ongoing updates may not be incorporated.
CityMapper helps discover apps, SaaS products, no-signup tools, clones, or software alternatives.
Ciyue is an Android dictionary app for MDX and MDD files. It supports searching and displaying multiple dictionaries, Material You theming, bookmarking words to a word book, and reading aloud. An AI translate function relies on non-free service providers, which F-Droid lists as an anti-feature.
CLARIAH-HiTZ is a repository search interface for finding resources in CLARIAH-EUS and CLARIAH-ES collections. It lists tools, services, corpora and lexical resources, with filters and sorting options. The search results include Basque-language tools and corpora.
A guide covering how to back up data and clean install Windows. It lists prerequisites such as a genuine Windows ISO file, the latest Rufus version and a minimum 8GB USB drive, and includes steps for creating a bootable USB with Rufus.
Click and Relax is a free service that reproduces nature sounds with corresponding scenes of photographs or videos. It also offers a noise generator for white, pink and Brownian noise and runs as a website, Windows and Android apps, and browser extensions.
Clipboard CopyPaster is a free Android clipboard manager by EVVAsoft. It saves copied texts, links and images, and allows copying saved data back to the clipboard. Features include editing, sharing, notes, search, QR codes, themes, a password, biometrics, backups, PDF conversion and a floating window. On Android 10 and higher, the app must be opened to save clipboard contents.
A browser-based tool that converts clipboard text into Markdown. Users copy text, paste it into the page, and the converted Markdown appears. Conversion is performed by to-markdown, a JavaScript converter running locally in the browser.
ClippingMini is a bookmark manager that saves links, files and documents into folders. The source states that AI tags, categorizes and summarizes them, checks unsafe URLs and previews documents, video and audio in the browser. It is available through a Chrome extension and a web app, and it can be connected in ChatGPT for saving links and searching the library.
Clocker is a menubar app for distributed teams, written in Swift and AppKit. It shows world clocks for multiple cities with custom labels and reordering, and includes upcoming meetings and a calendar in the menubar. Four themes are offered: Light, Dark, Solarized Light and Solarized Dark.
Clockify is a time tracker and timesheet app that lets users track work hours across projects. It offers a timer, manual time entry, weekly timesheets, and reports for analyzing and exporting tracked time. Features also include projects with estimates and budgets, scheduling, time off, invoicing, expenses, and team management.
Clone Wars is a list of over 100 open-source clones and alternatives of popular sites such as Airbnb, Instagram, Netflix, TikTok, Spotify, WhatsApp and YouTube. The list includes source code, tutorials, demo links, tech stack and GitHub stars count, and is organized into a table of clones with tutorials and a table of clones and alternatives.
Clonr is an online service that mirrors public MEGA links to fast, unthrottled direct downloads. It does not require users to create an account, install an application, or adhere to transfer quota limits. Users can preview files directly in their web browser, and the service supports cloning of both public MEGA files and folder links.
CMUSphinx is an open source speech recognition system for mobile and server applications. It supports C, C++, C#, Python, Ruby, Java and JavaScript, and Unix, Windows, iOS, Android and hardware platforms. The related PocketSphinx 5.1.0 release adds Python 3.14 support and pre-built wheels for Linux/arm64.
CNGBdb is a unified platform for sharing and applying biological big data with the research community. Built on big data and cloud computing technologies, it offers data services including archiving, analysis, knowledge search, management authorization, and visualization.
coastDat is a model-generated database used to assess long-term changes in data-poor regions. Numerical models reconstruct marine climate aspects such as storms, waves and storm surges, and ecosystems, relying on large-scale atmospheric information. Where possible, reconstructions are supplemented by climate change projections. The approach has been applied to issues in the North and Baltic Seas.