For online classes, telehealth visits, and support calls, OpenVidu Meet is a video meeting app that anyone with a link can join from a browser, with no account or download. A room needs only a name, and an optional wizard adds limits on participants (up to 30) and meeting length (up to a day), plus microphone and camera defaults. A shared Moderator or Speaker link admits anonymous guests, a personal link identifies each invited guest, and registered users sign in with their accounts. Developers can embed a room with an iframe or web component, and webhooks report meeting events to as many endpoints as needed. A smart mosaic favors recent speakers and counts the participants it hides, and a status rail shows the recording light, an encryption badge, and the time left. Moderators mute one participant's microphone, camera, or screen share, switch them off for everyone, remove people, and promote others. Virtual backgrounds blur the room or swap in an image, before joining or mid-call. Recordings start by hand or when the first participant, the second participant, or a moderator joins, in grid, speaker, or single-speaker layout. Permitted members can play, download, delete, or share saved recordings by link. End-to-end encryption protects audio, video, chat, and names behind a shared passphrase, though encrypted rooms cannot be recorded. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Schools, training companies, and HR teams use Chamilo LMS to publish courses, guide learners step by step, and prove completion with grades, badges, and certificates. Teachers build courses from documents, videos, and 360 media, then arrange them into learning paths that unlock in sequence and track every learner's progress. Quizzes offer more than twenty question types with randomized draws, time limits, and adaptive testing, while assignments accept submissions, support co-grading, and plug into plagiarism checks. The gradebook turns scores into certificates with QR codes, and skills frameworks record competency levels as learners advance. Sessions let one course run for many cohorts on different calendars, attendance tools handle sign-in and Qualiopi style reporting, and the course catalogue can even sell enrolments through its e-commerce module. Discussion forums, live chat, surveys, and videoconference integrations keep classes social, and SCORM, QTI, LTI, and xAPI support means existing content and external tools slot in without conversion projects. Administrators import users in bulk, connect LDAP or OAuth2 logins, and export personal data for GDPR requests; learners get all of it in more than sixty languages, including right-to-left scripts. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

AKHQ puts every Kafka cluster your team runs into one browser console, so topics, messages, consumer lag, schemas, and connectors stop being command-line archaeology. Browse live data inside any topic with search and Live Tail, inspect records by key or partition, and produce test messages without touching a console producer. Consumer group views show lag per partition, and offset resets take a couple of clicks instead of a maintenance window. Multiple clusters sit side by side in the same interface, each with its own Schema Registry, Kafka Connect, and ksqlDB connections attached. Schemas can be created, updated, and versioned from the UI, and Connect clusters report connector and task status you can pause, restart, or reconfigure. Administrators manage ACLs and cluster configuration from the same screens developers use to explore data. Access control goes deep: roles bundle resources and actions, groups scope them with topic patterns and cluster restrictions, and sign-in plugs into OIDC, LDAP, or basic authentication. Point it at your brokers with one configuration file, run it as a single container, and the whole platform team shares one safe window into production Kafka. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

With over 140,000 code commits, 1,200+ GitHub stars, and continuous development since 2004 spanning more than two decades of active maintenance through version 18.6.0 released in July 2026, XWiki operates as a second-generation wiki platform that goes beyond static pages by enabling teams to build custom collaborative applications directly inside wiki pages using structured data forms and in-page scripting. The Java backend runs on Apache Tomcat with PostgreSQL, MySQL, or Oracle database storage, serving a responsive web interface with a WYSIWYG editor featuring real-time collaborative editing, link and macro editors, user mentions, inline comments, annotations, and complete version history with diff comparison. The App Within Minutes extension lets non-developers create custom data-driven applications using drag-and-drop form builders that generate filterable live tables for structured data browsing without writing code. Over 900 extensions from the built-in Extension Manager add functionality including blogs, task trackers, forums, diagram editors, and Confluence migration tools. Enterprise integration features include LDAP and Active Directory authentication, SAML and OIDC single sign-on, fine-grained per-page and per-space permissions with nested page hierarchies, and multi-wiki support for hosting multiple independent wikis from a single installation. The RESTful API provides programmatic access to pages, spaces, objects, attachments, and properties with XML and JSON representations. Office document import converts Word and Excel files directly into wiki pages while PDF export generates formatted documents from wiki content. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. LGPL-2.1 licensed.

Manga collections tend to get trapped on a single phone; Suwayomi moves the library, downloads, and reading progress onto a server you run, so every browser and device sees the same shelf. In the browser, a built-in reader handles single page, double page, continuous vertical, continuous horizontal, and webtoon layouts, adding image filters, custom keybinds, auto scrolling, and separate desktop and mobile views. Content comes from Mihon (Tachiyomi) extensions, which can be searched, browsed, and sorted into categories, with custom extension stores loaded from JSON or Protobuf indexes. Downloads save chapters as CBZ archives for offline reading, and the server checks the library for new chapters every 12 hours by default, fetching them automatically if you allow it. Progress follows you through MyAnimeList, AniList, and MangaUpdates, a Suwayomi extension and tracker for Mihon, SyncYomi servers, and KOReader. E-reader apps connect over OPDS feeds, scheduled Mihon-compatible backups protect the library, and FlareSolverr or Byparr support handles Cloudflare-protected sources. Public instances can be locked down with basic authentication, a simple login page, or JWT-based UI login, and a PostgreSQL backend, still in beta, can replace the default file store. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MPL-2.0 licensed.

Ziwei Doushu casts a complete Zi Wei Dou Shu chart, the twelve-palace Purple Star astrology chart, from a birth date, birth double-hour, and gender, and shows you the whole board instead of a single fortune line. Enter the details and the engine places the fourteen major stars and supporting stars across the twelve palaces, marks each star's brightness on a seven-tier scale, and layers the Four Transformations for the natal chart, the current decade, and the current year, including flying-star self-transformations. Births near an hour boundary stay accurate because true solar time correction combines birthplace longitude with the equation of time, and the calendar edge cases are handled openly: China's 1986 to 1991 daylight-saving years, four selectable leap-month conventions, and the late Zi hour day change. Switch between natal, decade, and annual views to watch the same life read at three speeds, then look up what you are seeing. A star encyclopedia explains the fourteen major stars in each of the twelve palaces, a pattern library of more than 1,100 rules names the classic configurations on the board, and a classics library offers full-text search across public-domain source texts. Compatibility charting compares two people side by side, dark and light themes keep long study sessions comfortable, and the layout adapts to phones. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Enterprise documentation discipline without enterprise infrastructure: Documize Community is the Confluence alternative built on exactly that trade. The entire platform - Go backend, Ember.js frontend - compiles to a single executable binary for Linux, Windows, and macOS with zero runtime dependencies: no Elasticsearch, no Redis, no JVM. Point it at PostgreSQL, MySQL, MariaDB, Percona, or Microsoft SQL Server (rare in open source, decisive in Microsoft shops), and schema migrations run on launch with native full-text search on whichever engine you chose. Content organization rejects nested-folder sprawl for Spaces, categories, and labels, and the section-based composable editor mixes rich text, Markdown, code blocks, PDFs, diagrams, and embedded Jira or Trello content in one document, with reusable blocks and templates so teams start from standards rather than blank pages. It deliberately unifies internal team docs and customer-facing documentation in one system with granular space-, document-, and action-level permissions deciding who sees what. Where wikis stop, Documize continues: content approval workflows (draft, review, approve, publish), version management, lifecycle control, feedback capture, PDF export, analytics showing what gets read and ignored, activity streams, and audit logs. Keycloak, LDAP, and SSO integrate for enterprise auth. AGPL-licensed.

"Dead simple static HOMepage for your servER" - Homer's name is the spec. It is a fully static HTML/JS dashboard driven by one YAML file (assets/config.yml): list your services in groups with names, icons, tags, and URLs, and Homer renders a clean, fast landing page for everything you self-host. Because there is no backend, no database, and nothing to maintain, the container is tiny and effectively zero-maintenance - the entire operational surface is a text file you can version-control alongside your infrastructure. Despite the minimalism, the feature set is genuinely useful: smart cards add live data to service tiles via a type key - Pi-hole block statistics, AdGuard Home status, Jellyfin activity, Gatus and Home Assistant states, and dozens more integrations, with configurable periodic refresh. Fuzzy search jumps to any service as you type, keyboard shortcuts drive navigation, and multi-page support with item grouping keeps large homelabs organized. Theming covers built-in light and dark modes plus full custom CSS, tags get color-coded styles, and the whole dashboard installs as a PWA on phones and tablets. Icons come from Font Awesome or your own images. If Dashy is the maximalist dashboard and Homarr the drag-and-drop one, Homer is the minimalist: one YAML file, instant loads, and nothing that can break at 2 a.m.

Eliminate indexing blind spots across fragmented company networks with Fess, a distributed enterprise search engine that crawls internal document repositories, corporate intranets, and cloud services to provide employees with instant, permission-aware file discovery. Organizations can schedule automated crawlers across web pages, network shares, databases, and third-party storage platforms to extract text and generate visual thumbnails from PDFs, spreadsheets, presentations, and compressed archives. Users can search indexed records using natural language queries, filtering results by file metadata, creation dates, categories, and geographic coordinates while viewing contextual snippets with highlighted keyword matches. Granular role-based permissions mirror directory security structures from Active Directory and LDAP so staff only see search results for documents they have explicit authorization to inspect. The browser-based administrative console lets operations teams define path mapping rules, manage virtual hosts, monitor active crawl jobs, inspect error logs, and configure scheduled re-indexing workflows without modifying server configuration files. Security teams can establish single sign-on across the organization using SAML or OpenID Connect authentication providers to secure administrative workflows and search portals. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.

Manga, comics, ebooks, and light novels get a streaming-service-style home in Kavita - a fast, cross-platform reading server for the DRM-free collection you share with family and friends. It natively serves CBZ, CBR, CB7, ZIP/RAR/7z archives, raw images, EPUB, and PDF, with hand-crafted web readers per format: webtoon scrolling, single and dual-page spreads with advanced caching for the comic reader, and a book reader with adjustable fonts, spacing, margins, color themes, and column modes. Reading progress tracks per user, so everyone resumes exactly where they stopped on any device. Metadata parses from filenames, ComicInfo.xml, and EPUB fields, feeding index-backed search, smart filters, collections, reading lists with CBL import, and Want to Read queues. Role-based user management covers age restrictions, per-library access, and OIDC authentication. An OPDS feed connects third-party clients - Panels on iOS, Librera on Android, KOReader on e-ink devices - and a comprehensive REST API supports custom integrations. EPUB annotation and highlight support, custom theming, and full localization round it out. Built with .NET and Angular, it handles 50,000+ file libraries without strain; optional Kavita+ adds AniList scrobbling, recommendations, and external metadata.

Between the factory floor and the cloud sits a gateway that has to speak Modbus to a PLC, OPC-UA to a machine, and MQTT to your platform, and Eclipse Kura is the framework that runs that gateway as a managed, programmable container. Drivers encapsulate each field protocol and its settings, while Assets model the data channels of attached devices, giving every sensor and controller a uniform mirror that applications can read, write, and publish. Kura Wires turns edge logic into a diagram: drag an asset onto the canvas, wire it through timers, filters, and SQL-based aggregation, and publish the result to the cloud, installing extra components from the Eclipse Kura Marketplace when the palette runs short. Telemetry survives bad networks because the data service stores messages locally and forwards them when the connection returns, with publishing policies abstracting the underlying MQTT transport. Administrators manage the whole gateway from the web console: network interfaces, firewall, installed bundles, snapshots of the full configuration that can be exported and restored, and remote deployment and upgrade of applications through the cloud connection. Hardware services expose serial ports, USB, Bluetooth, GPS position, GPIO, I2C, and a watchdog that resets the system when a critical component stops reporting. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. EPL-2.0 licensed.

Engineers who have outgrown Duplicati or rsync scripts tend to appreciate Kopia's design: encrypted, compressed, content-deduplicated snapshots in Go, stored in a repository on any storage you control - S3, Google Cloud Storage, Azure Blob, Backblaze B2, SFTP, WebDAV, or a plain filesystem. Encryption is mandatory and end-to-end: every block is encrypted client-side with AES-256-GCM or ChaCha20-Poly1305 using keys derived from your repository password, and even file names never leave the machine in plaintext. Blocks are packed into 20-40 MB blobs with random names, so the storage provider learns nothing about content or structure. Deduplication is automatic and content-based - identical data across files, snapshots, and even multiple machines backing up to the same repository is stored once. Policies govern everything per-directory: compression choice, retention (hourly through annual), scheduling, and ignore rules. Incremental snapshots are point-in-time records you can mount and browse like a filesystem. This deployment runs the Kopia repository server with its web UI, centralizing backups from multiple client machines over an authenticated API - each client connects with the server URL and certificate fingerprint, and users only see their own snapshots. Error correction, high-latency-tolerant caching, and both CLI and GUI round it out.

Mercure is a realtime hub that pushes updates from your backend straight to browsers over Server-Sent Events, so live dashboards, chat rooms, and activity feeds refresh the moment data changes. Subscribers connect through the browser's built-in EventSource API and choose topics with exact matchers for single resources or URL Pattern matchers for whole families such as /books/:id. Publishers send one form-encoded POST to the hub endpoint, and Mercure fans each update out to every matching connection instantly. JWT access tokens grant publish and subscribe rights topic by topic, so private updates reach only entitled clients while public topics can stay open to anonymous subscribers. If a connection drops, the client reconnects with its last event ID and Mercure replays the updates it missed from stored history. Subscription events announce every arrival and departure, so your application gets live presence and a current list of who is connected. A built-in debug UI shows messages flowing through the hub alongside active subscriptions, turning realtime bugs into something you can watch happen. Optional end-to-end encryption protects sensitive payloads, and any backend able to send an HTTP POST can publish, whatever language it runs. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Apache OpenMeetings puts the whole meeting in the browser: cameras, a shared whiteboard, the agenda document, and recording controls, all running on your own server. Participants join rooms with audio and video, audio only, or video only, choose camera resolutions and devices, and present by sharing a screen or a single window at selectable quality. Moderators control the floor person by person: who may draw on the whiteboard, present, share or record the screen, mute others, or speak while everyone else stays muted. Multiple whiteboards hold drawings, text, clip art, and imported documents in PDF, office, and image formats, rescaling to fit every participant's screen, and boards can be saved into the drag-and-drop file explorer for the next session. Every meeting can be recorded with all audio streams exactly as heard, then downloaded as MP4 or played back in the integrated player, and the built-in calendar schedules rooms and sends invitations. Breakout rooms split classes and workshops into groups, polls gather decisions live, private and group chat runs beside the video, and telephone users can dial into rooms through the Asterisk SIP integration. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

CubeSandbox gives every AI agent its own hardware-isolated MicroVM with a dedicated Linux kernel — not a shared-kernel container but a true KVM virtual machine — booting in under 60ms with less than 5MB of memory overhead per instance, enabling thousands of concurrent sandboxes on a single server via kernel sharing and Copy-on-Write memory. The Rust-built CubeProxy exposes an E2B SDK-compatible REST API on Axum, so existing E2B Cloud applications switch by changing one environment variable with zero client code changes. CubeMaster orchestrates cluster-level scheduling in Go while Cubelet manages node-local sandbox lifecycles including create, run, pause, resume, snapshot, and destroy operations. CubeVS, the eBPF-powered network layer, enforces per-sandbox isolation with LPM trie-based egress policies entirely in kernel space — no userspace context switches — while CubeEgress provides an L7 security proxy with per-domain, per-path, and per-method allowlists plus automatic credential injection that keeps secrets invisible to sandbox code. Hundred-millisecond-granularity snapshots enable checkpoint, rollback, and parallel fork from any saved state. The volume framework supports E2B-compatible pluggable storage with independent lifecycle and cross-sandbox sharing. Production deployment uses Terraform on Tencent Cloud or Helm charts on Kubernetes, K3s, or TKE, with full ARM64 support alongside x86_64 and AutoPause/AutoResume for cost optimization. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.

Running a school means juggling lesson plans, timetables, attendance, behaviour notes, and grades all at once; Gibbon gives teachers, students, parents, and administrators one shared web system for that daily work. Teachers build lessons from reusable Smart Blocks, assemble them into units with learning outcomes, set and collect homework online, and grade the results in a colour-coded markbook that stays linked to every class. The timetabling engine builds schedules from reusable day structures, ties them to real calendar dates, handles exceptions, books rooms and facilities, and shows every student and teacher exactly where they should be. Attendance can be taken by form group, class, or individual student, with future absences recorded ahead of time and reports ready for emergencies or truancy follow-up. Behaviour records log the good alongside the bad using your school's own descriptors and severity levels, notify form tutors when something needs attention, and surface patterns across a student's history. Each student's profile pulls timetable, attendance, behaviour, library, and assessment information into one page, while activities sign-ups, a school-wide resource library, and departmental scope-and-sequence views keep the wider community connected. Because every module can be switched on or off per role and extended with community modules, the same platform fits a small primary school and a large secondary school in 26 languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

Reclip is a self-hosted web downloader that turns links from YouTube, TikTok, Instagram, and more than a thousand other video sites into MP4 or MP3 files saved on your own server. Paste one link or a whole batch of URLs, and Reclip fetches each video's title, thumbnail, duration, and uploader before you commit to anything. A quality picker lists every available resolution, so a lecture can be grabbed at 360p for a phone while a concert film comes down at full height with the best audio stream merged in. MP3 mode strips the picture away entirely, which makes it painless to archive podcasts, DJ sets, and spoken-word clips as plain audio files. Playlists expand into their individual videos automatically, repeated URLs are deduplicated before any bandwidth is spent, and a Download All button works through the whole queue without babysitting. Each job runs in a background thread with live status in the interface, so the page stays responsive while ffmpeg finishes merging streams behind the scenes. Everything lives behind one clean page with no accounts, no uploads to third-party converters, and no expiring download links, and finished files land in a downloads folder you control. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

An open-source alternative to Notion and Google Docs developed jointly by France's DINUM and Germany's ZenDiS that prioritizes data sovereignty, real-time collaboration, and structured knowledge management. The Yjs-powered CRDT engine provides live cursors, presence indicators, and inline comments enabling teams to edit simultaneously without conflicts, while BlockNote.js renders a clean block-based editing experience with rich text formatting, Markdown shortcuts, and drag-and-drop content organization. Hierarchical sub-documents create wiki-style knowledge bases where documentation nests naturally into navigable structures, and a dedicated slide mode transforms any document into a presentation without separate tooling. The document API separates content from metadata with distinct endpoints for formatted content, raw content streams, and document properties. Optional AI integration connects to configurable language models for writing assistance, summarization, and content generation directly within the editor. Access control supports granular permissions per document with team sharing, public links, and invitation flows. DOCX import brings existing documents into the platform while maintaining formatting fidelity. The Django backend serves a REST API with PostgreSQL storage, Redis caching, and S3-compatible media handling. Deploy via Docker Compose, Kubernetes with the official Helm chart, Nix, or YunoHost on your own infrastructure. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.