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OpenPrinting CUPS is a standards-based printing system providing IPP print services, printer administration, and command-line tools for Linux and Unix-like systems.

SnappyMail is a fast, modern webmail client (RainLoop fork) focused on performance, privacy, and secure IMAP access with optional PGP support and admin controls.

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Gmail+10

Open-source low-code platform to build internal tools and customer-facing web apps with a visual UI builder, reusable modules, data-source connectors, and RBAC.

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Retool+13

Open source headless CMS and real-time graph database with schema tooling, full-text search, tables, documents, files, and SDKs for web apps.

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Contentful+12

Winter CMS is a Laravel-based, self-hosted open-source CMS with a user-friendly backend and extensible plugin/theme architecture for websites and web apps.

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WordPress.com+10

Self-hosted, open-source dashboard for Strava activities with charts, gear stats, heatmaps, and yearly recaps.

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Intervals.icu+3

Accent is an open-source translation management tool for apps, providing a web UI, CLI, and GraphQL API to manage i18n strings with review history and collaboration.

Self-hosted email archiving system for syncing IMAP and Microsoft 365 mailboxes, indexing content and attachments, and exporting or restoring mailboxes with auditing and...

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MailStore Server+3

Hypersomnia is a community-driven multiplayer top-down shooter built in modern C++ without a game engine, featuring deterministic netcode and an in-game map editor.

Open-source, self-hostable file transfer service with resumable uploads, S3 or disk storage, transfer requests, and end-to-end encrypted WebRTC quick transfers.

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WeTransfer+9

Openreads is a privacy-oriented Flutter app for Android and iOS to track books you’ve read, are reading, want to read, or didn’t finish, with tags, stats, and CSV import/...

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Goodreads+4

Oxker is a Rust-based TUI for monitoring and managing Docker containers, including logs viewing, filtering, sorting, and common container actions.

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Docker+2

Semaphore is an open-source CI/CD platform to automate builds, tests, and deployments with YAML pipelines, parallel execution, and container-friendly workflows.

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Semaphore CI+12

GPL-licensed SIP server/proxy for carriers, ITSPs, and enterprises, enabling scalable signaling, routing, and application integration.

Open-source web app to manage electronic component inventory with projects/BOMs, barcode labels, fine-grained permissions, and powerful search.

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inFlow Inventory+11

Lightweight self-hosted web app for managing checklists and Markdown notes with file-based storage, PGP encryption, REST API and Docker deployment.

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Evernote+13

Open-source platform for secure, anonymous whistleblowing and case handling, designed for privacy by default and adaptable to many reporting use cases.

Self-hosted open-source ad serving platform to manage campaigns, deliver targeted ads, and track impressions, clicks, and conversions with reporting.

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Google Ads+6

Cypht is an open-source PHP/JavaScript webmail and RSS aggregator built from modular plugin sets, unifying multiple accounts with search and server-side filters.

Socioboard is an open-source social media management platform for publishing, scheduling, team collaboration, RSS content curation, and analytics/reporting across multipl...

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Hootsuite+11

MODX Revolution is an open source PHP CMS and content management framework for building highly customized websites and digital experiences with full control over markup a...

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WordPress.com+11

Self-hosted, lightweight federated messenger with end-to-end encrypted threads and optional WebRTC audio/video calling across independently hosted nodes.

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Signal+19

Bludit is a simple, fast flat-file CMS that stores content as JSON, enabling database-free websites and blogs with themes, plugins, and Markdown/HTML editing.

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WordPress.com+16

Self-hosted open-source billing, invoicing, payments, and client management platform for hosting and online service businesses.

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WHMCS+12

Databunker is a self-hosted vault that tokenizes and encrypts PII/PHI/KYC/PCI data, providing a secure API, consent management, and audit trails for compliance.

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Skyflow

DebOps is a free, open-source collection of Ansible roles and playbooks to bootstrap and manage Debian/Ubuntu data centers.

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Red Hat Ansible Automation Platform+6

Open source IoT integration and automation platform with an adapter ecosystem, centralized state database, and tools for visualization and data logging.

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Samsung SmartThings+18

Self-hosted automation tool for qBittorrent to tag and categorize torrents, enforce share limits, clean up orphaned data, and remove unregistered torrents.

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FileFlows Cloud

Self-hosted error tracking for developers with full stack traces, local variables, and drop-in compatibility with Sentry SDKs for many languages and frameworks.

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Sentry+5

Open-source BirdNET toolkit to batch-process audio recordings and identify bird species from their vocalizations using machine learning models.