scratchfoundation/scratch-editor

omegaUp is an online platform that hosts programming competitions and automatically grades participants' code submissions in real time, telling them instantly whether their solutions are correct. It's essentially a competitive coding arena — similar to LeetCode or HackerRank — that organizations can use to run their own programming contests and evaluate talent.

why it matters: With a strong community presence in Latin America and support for multiple languages, omegaUp represents a growing market for skills-based technical hiring and education platforms outside Silicon Valley. Builders and investors in the edtech or developer hiring space should take note, as the high fork count suggests many organizations are already adapting it to run their own competitions or recruitment pipelines.

Discover is an app store for Linux desktops that lets users search, browse, and install applications, games, and tools — similar to the Mac App Store or Google Play, but for the KDE Linux desktop environment. It also handles software updates and lets users manage where their apps come from, including support for Flatpak, a popular way of packaging Linux apps.

why it matters: As Linux-based desktops gain traction in enterprise and consumer markets, a polished app discovery experience is a critical adoption driver — this project shows that open-source platforms are investing seriously in the kind of curated, user-friendly storefronts that made iOS and Android mainstream. For founders and investors, it signals a maturing Linux desktop ecosystem that could become a more viable platform for app distribution.

Survev is a free, community-built recreation of the popular online multiplayer game surviv.io, where players compete in a 2D top-down battle royale format — think a bird's-eye-view version of Fortnite in a browser. Anyone can download, host, and modify the game themselves, with optional user accounts and a database to track player data.

why it matters: With 166 forks and nearly 180 stars, this project shows strong demand for self-hostable, open-source multiplayer game infrastructure that builders can customize and deploy independently — a signal that the market wants more control over gaming experiences without licensing fees. For founders or investors, it represents a blueprint for how community-driven development can sustain and evolve a game after its original creators move on.

Odoo is a collection of open-source business apps — including tools for sales, accounting, inventory, HR, marketing, and manufacturing — that work individually or together as a full business management platform. Think of it as an open-source alternative to Salesforce or SAP, covering nearly every operational need a growing company might have.

why it matters: With over 55,000 stars and 34,000 forks, Odoo represents a massive, actively developed alternative to expensive enterprise software, giving startups and mid-sized companies a customizable foundation without the six-figure licensing costs. For founders and investors, it signals that the market for flexible, integrated business tools is enormous — and that open-source is a viable strategy for competing with entrenched players like Oracle and Microsoft.