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Learn data structures and algorithms through open-source implementations in multiple programming languages.

StreamRecorder is a browser-based service that automatically records live streams from 25 platforms with no installation required.

Copycat is a browser extension that copies tab titles, links, selections, images, audio and video into formats including plain text, HTML and Markdown; it supports Chrome and Edge, with Firefox listed as an old version.

Project Euler offers mathematical and computational problems for users to solve and learn from.

Manga Reader opens local manga files on Linux, according to its Flathub listing.

Waveform Free is a free digital audio workstation for Mac, PC, and Linux, with recording workflows, mixing, and audio effects.

SPARTAN Procedural generates and animates pixel art tiles with procedural features.

Plan a week, manage tasks and share booking links using time.fyi with Google Calendar.

Tom's Hardware publishes PC hardware news, reviews and advice for computer builders and enthusiasts.

CEX.IO supports buying, selling, trading, holding, and earning cryptocurrency, with staking and savings products shown on its page.

The University of Urbino Carlo Bo has about 15,000 students and describes its research and study across multiple fields.

UX Palette Generator creates web interface color palettes with harmony methods and CSS, JSON, and SVG exports.

Computer Music covers music gear and equipment, with news, tutorials, and reviews for music makers.

Ladder provides a self-hosted proxy that removes CORS headers and modifies HTML as an alternative to 12ft.io and 1ft.io.

This online subtitle translator accepts SRT, VTT, ASS, SUB, SBV, and STL files for translation and download.

Rev AI provides a developer-focused API for converting speech into text.

Bridgy Fed connects profiles across social networks, bridging Mastodon and other decentralized social platforms.

Book Marks is Literary Hub's book review aggregator. It logs reviews from literary outlets, assigns each review a Rave, Positive, Mixed or Pan rating, and averages ratings for books reviewed by at least three outlets.

Awesome Cheatsheets collects quick references for popular programming languages and frameworks.

Wits shares details on academic programs, research activity and campus life at the University of the Witwatersrand in Johannesburg.

Browse a database of public DNS nameservers reachable over IPv4 or IPv6.

Institut Teknologi Sepuluh Nopember focuses on science, technology and the arts in Indonesia.

Scottish Health and Social Care Open Data offers searchable datasets, including emergency department waiting times and COVID-19 records.

Chiba University’s official site shares information about its faculties, graduate programs, education, research, admissions and student life.