The OHIF Viewer reads CT, MR, PET, and slide microscopy studies straight from a DICOMweb archive and shows them in any browser tab, with no workstation software to install. The study list filters by patient name, MRN, study date, description, modality, and accession number. Each study launches into the workflow mode that fits its modalities. Basic Viewer mode tracks the measurements drawn on images and gathers them in a side panel for review. Layouts include MPR, four-up 3D, volume rendering, and PET/CT fusion with maximum intensity projection. Labelmap tools offer brush, eraser, threshold, and shape segmentation, and DICOM segmentation, RT Structure, and structured report objects display alongside the pixels. PDFs, video clips, ECG waveforms, 4D series, and whole slide microscopy open in the same interface. Hanging protocols arrange series the way each workflow expects. An iframe embed drops the viewer into a portal or research app. Pair it with Orthanc or DCM4CHEE for storage and Keycloak for sign-in. Oncology trial reads, imaging research, and web front ends for a PACS are the usual jobs. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Describe a component in natural language and watch it render: OpenUI, from Weights & Biases, is an open alternative to Vercel's v0. Type a prompt like "a dark-themed dashboard with a sidebar and charts" and the LLM renders working HTML with Tailwind styling live in the browser. You then iterate conversationally, asking for changes until the design is right, and convert the result to React, Svelte, or Web Components for use in a real project. The backend is Python with LiteLLM routing, so it works with OpenAI, Anthropic, Gemini, Groq, and Mistral API keys, or fully offline against local Ollama models, including vision models like LLaVA that can generate UI from screenshot input - feed a screenshot and the model reproduces or riffs on an existing interface. Generated markup is inspectable at any point, with light and dark mode toggles, theme selection, and responsive previews across device sizes. The practical effect is compressing the mockup-review-revise loop from hours to minutes: a described layout renders in seconds and iterates through follow-up prompts, and because output converts to real framework code, prototypes feed directly into production codebases instead of staying trapped in a design tool. Self-hosting keeps unreleased product interfaces and prompts on your own server, and LiteLLM routing lets you pick the model per task - a cheap fast model for rough drafts, a stronger one for final passes, or free local models for unlimited experimentation.

Traffic Source answers the three questions every site owner actually asks: who showed up, where did they come from, and did they pay. The live dashboard counts visitors in real time alongside pageviews, sessions, bounce rate, and session duration, with no cookie banner required because tracking uses no cookies at all. Referrer and UTM breakdowns show exactly which campaigns, newsletters, and posts earn their traffic, while country and city data arrives through proxy headers. Visitor journeys replay every page a person viewed before converting, so you can see the path from first click to checkout instead of guessing. Connect Stripe once and payments are matched to the sessions that produced them automatically, with no webhook plumbing to maintain. The affiliate system lets you create partners with custom commission rates and shareable referral links, and each affiliate gets a public dashboard showing their own clicks and earnings. Search Console data is pulled into the same screen, where a keyword explorer shows the pages, countries, and devices behind any query. One tiny tracking script covers all your sites, including single-page apps. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

AnyCable moves your WebSocket connections out of your application process and into a dedicated realtime server, so live chat, presence, and notifications keep flowing while your app code focuses on business logic. Rails teams feel it first: the Action Cable channels, subscriptions, and broadcasts already in production keep working unchanged once the endpoint points at AnyCable, which handles authentication, subscriptions, and connection churn by calling back into your application over RPC only when channel code needs to run. Anything that can send an HTTP request can publish to connected clients, and teams outside Rails use standalone mode from Node, Python, Go, or PHP services, including Laravel applications looking for a Reverb or Pusher replacement. Broadcast traffic arrives through Redis Pub/Sub, durable Redis Streams, or the HTTP API, so background jobs and other services push messages without holding a single socket open. Operators watch connected clients, broadcast volume, and RPC failures through Prometheus metrics, and can disconnect remote clients or inspect active streams without a restart. Signed-in users stay safe because every connection request passes through your existing authentication before the server accepts it. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Click the pencil on a live page, change a headline or drop in an image, and publish: that is django CMS, an open-source content management system built around editing in place. A structure board lists every plugin on a page as a draggable tree, so layouts get rearranged without touching code. Plugins cover rich text with tables and links, pictures from a media library with sizing, margin, and visibility settings, and nested containers, and rules limit where each plugin may appear. With versioning enabled, every edit is a draft that can be previewed, compared visually or in source against an earlier version, discarded, or published, and publishing can be reserved for editors. Each page carries a translation per language with its own title and slug, and a language menu adds translations or copies plugins from another language. The page tree manages navigation as a hierarchy with drag-and-drop ordering, per-language status dots, and a menu toggle per page. Page permissions can let a legal team edit one branch of the tree and nothing else, and one settings file can serve several domains by hostname. Apphooks mount whole applications, such as a news section, on a page that editors place in the tree, and reusable aliases keep footers and banners in one place. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. BSD-3-Clause licensed.

Backed by 12,400+ GitHub stars and positioned as the self-hosted alternative to FullStory and Hotjar, OpenReplay delivers the open-source session replay platform that keeps every byte of user behavior data on your own infrastructure. The JavaScript tracker captures pixel-perfect recordings of clicks, scrolls, form inputs, and navigation with automatic sensitive data masking, while simultaneously logging network requests, console errors, JavaScript exceptions, and Redux, VueX, MobX, NgRx, Pinia, and Zustand store state changes for complete technical context. DevTools mode reconstructs each session with full stack traces, GraphQL queries from Apollo and Relay, Fetch and Axios request payloads, CPU and memory metrics, and page speed waterfall charts — effectively giving developers a browser inspector tied to any user session. Product analytics surfaces conversion funnels, user journeys, click heatmaps, web vitals trends, and retention cohorts without requiring custom instrumentation. Co-browsing connects support agents to live user sessions with cursor control and WebRTC audio, enabling real-time assistance without third-party screen-sharing software. Integrations push session context into Sentry, Datadog, CloudWatch, Stackdriver, and Elastic for front-to-back debugging. Feature flags enable gradual rollouts with session-level targeting. The platform deploys to any cloud via Docker and Kubernetes with auto-scaling ingestion handling up to 50,000 sessions per month on the open-source edition. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPLv3 licensed.

Webstudio delivers a professional-grade visual website builder that outputs semantic HTML and clean CSS without inline style pollution or JavaScript-heavy render paths. The live canvas editor provides direct manipulation of all CSS properties — flexbox, grid, spacing, typography, transforms, and filters — with real-time preview across responsive breakpoints. The component system supports reusable instances with variants and overrides, while design tokens maintain consistent colors, fonts, and spacing across the entire site. Data bindings connect to external content sources through native integrations with Strapi and Supabase, plus a generic CMS interface for any REST API backend. The Scroll Timeline API powers animations at 120 FPS off the main thread, with presets for rotate, scale, translate, opacity, color, and filter effects. Projects build as dynamic Remix applications with server-side rendering or export as static HTML, CSS, and JavaScript files. The Webstudio CLI generates Docker-ready builds that run a Node.js server on port 3000, with Nginx reverse proxy configuration for SSL termination via Let's Encrypt. The builder requires minimum 1 GB RAM and 1 CPU core for Docker builds. MCP integration enables AI agents to create and modify websites programmatically. On RepoCloud, deploy Webstudio projects on a dedicated VPS with root SSH access, persistent storage, and complete control over your hosting, custom domains, and deployment pipeline, all under the AGPL-3.0 license.

Follow every blog, newsletter, and news site you like from one distraction-free inbox with the self-hosted Fusion RSS reader, which has no AI features by design. A left sidebar lists feed groups with unread counts and jumps between Unread, Starred, and All, while the center list shows articles under filter tabs with read and star buttons on every card. Click a card and a right-hand drawer opens with the full sanitized article, a link to the original, and Previous and Next buttons. Press Cmd or Ctrl+K, or the slash key, to search feeds and articles from anywhere. Stay on the keyboard with Google Reader-style keys such as j and k to move, m to mark read, s to star, and g then u to jump to Unread; the question mark lists them all. Add a feed by entering a site address and letting auto-discovery find it, then pick its group, refresh frequency, and HTTP proxy, or suspend it to pause updates. OPML import and export bring subscriptions in or out. Starred articles are saved as snapshots that outlive their source feed. Fever API compatibility lets Reeder, Unread, and FeedMe read the same library. Sign in with a password or OIDC single sign-on, and install the interface as a PWA with Light, Dark, and System themes in eight languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Kaleta is a business-website CMS where the page you edit is the page your visitors get, not a preview of it. The visual builder works on the live canvas: add sections, drag elements, edit text in place, and style every element separately for desktop, tablet, phone, and hover before you publish. Forty-six elements and forty ready-made sections cover pricing tables, timelines, before-and-after sliders, galleries, accordions, carousels, maps, and mega menus. Consistency comes from a design-token system: change one colour, font, spacing, or radius token and the whole site follows, with a WCAG contrast check on every colour pair and export in the W3C token format. Blocks you reuse become components edited once and updated everywhere, and each page carries its own search title, sharing image, and visibility, with the last twenty publications kept as versions. Moving in is a first-class feature: importers take WordPress exports including WooCommerce products and Polylang or WPML translations, plus Ghost, Blogger, Joomla, Drupal, and Webflow, creating a redirect from every old address so rankings survive. An optional AI assistant connected through MCP builds pages and handles chores only as drafts you approve. Forms, booking, enquiries, media folders with focal-point cropping, multilingual publishing, and GDPR duties such as automatic personal-data deletion are built in rather than bolted on. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-2.0 licensed.

Define a DocType in Frappe and the framework automatically generates database tables, Python ORM classes, REST API endpoints, form views, list views, and role-based permission rules from that single schema definition. The meta-driven architecture stores schemas as database records, letting administrators add fields, reorder layouts, and modify validation rules through the browser-based Form Builder without redeployment. Server-side Python controllers handle business logic through hook-based lifecycle events while client-side JavaScript manages interactive form behavior, with WebSocket connections providing real-time updates across sessions. The built-in workflow engine defines document state machines with role-gated transitions, email notifications, and conditional action visibility. Pre-configured Desk views include list, form, report, tree, kanban, calendar, and dashboard layouts with drag-and-drop workspace customization. The report builder generates grid reports with configurable columns, filters, grouping, and chart visualizations from DocType data or custom SQL and Python scripts. Background job processing uses Redis queues for email delivery, data imports, and periodic tasks. Virtual DocTypes connect external databases to the framework's UI without data migration. Docker deployment via frappe_docker provides production-ready Compose configurations with MariaDB, Redis, Nginx, and worker containers. The foundation powering ERPNext, HRMS, CRM, and Helpdesk in production. Over 10,500 GitHub stars. MIT licensed.

Strength training, cardio, and body metrics land in one workout log on your own server, backed by an optional AI coach that explains its advice from your real numbers. Quick entry such as 100x8@9 logs weight, reps, and effort in one line, with a rest timer, plate-loading calculator, and warm-up ramp beside the set table. A weight picker offers only loads your equipment can build, and a readiness check-in adjusts the suggested load and says why. Templates for 5/3/1 BBB, GZCLP, nSuns, PPL, and Upper/Lower run as written and edit like any custom program. Progress pages chart estimated 1RM, weekly volume per muscle group against MEV and MRV bands, a muscle heat map, bodyweight goals, and a training calendar. Garmin FIT, TCX, and GPX imports need no cloud account and add heart-rate charts and aerobic decoupling to each run or ride. The coach writes a weekly debrief, chats in a streaming conversation, and drafts a full program from a one-sentence goal, using your own Anthropic or OpenRouter key. History imports from Strong or Hevy CSV files with a dry-run preview and exports to CSV or TCX, and an MCP connector lets ChatGPT or other agents analyse it. The app installs as an offline-capable PWA, speaks English, French, Russian, and German, and keeps every user's data separate. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Every email your app sends while you build and test it lands in OwlMail's browser inbox instead of a customer's mailbox. Point any application's SMTP settings at OwlMail and every message is ready to open as rendered HTML, plain text, headers, or raw source. Attachments and inline images sit beside the body, and seven preset preview widths show how the message lays out on phones, tablets, and desktops before anyone real sees it. A Verify panel checks subject, body, and link hosts against expectations, while CI pipelines use the REST API with delivery cursors to wait for exactly the messages their test run produced, assert on them, and clean up afterwards. Coding agents get the same inbox read-only over MCP, so an assistant can confirm a signup email arrived without touching your mail server. When a message proves itself, relay it onwards to a real SMTP server, by hand or automatically under filtering rules, or fire webhooks with HMAC signatures and retry queues into the rest of your automation. Everything stores as plain .eml files on disk, with optional SQLite indexing, S3 attachment storage, and ZIP exports for archiving. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Galene is a self-hosted video conferencing system that runs full meetings, lectures, and tutorials in the browser while asking remarkably little of the server it runs on. Every group gets its own page with video tiles, a user list, and a chat pane, and participants join from desktop or mobile browsers with nothing to install. Presenters share a screen or individual windows, stream a video or audio file straight from disk, and switch to blackboard mode when a slide needs resolution more than frame rate. Moderators can warn or remove participants and lock the group, raise-hand status keeps question queues orderly, and anyone can blur their background or exchange files directly with peers. Groups are simple configuration files: set public or private rooms, passwords or login tokens, client limits, and expiry windows, then create users with moderator or presenter privileges using the galenectl command. Automatic subgroups spin up identical breakout rooms on demand, the pattern its author uses to supervise forty students working in pairs during computer science practicals. Calls stay smooth on poor networks because the server adapts video quality per participant, recovers lost packets, and relays media through its built-in TURN server when firewalls block direct paths. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Viewers arrive on browsers, phones, and desktop players, and SRS meets each of them with the right protocol from a single published stream. A broadcaster pushing RTMP can reach browser viewers through WebRTC with sub-second latency, phone apps through HLS, and desktop players through HTTP-FLV, all from the same live source without running parallel encoders. WHIP endpoints accept WebRTC ingest from browser studios and tools like OBS, while WHEP serves WebRTC playback, so an entire publish-to-viewer path can stay on modern web protocols. Operators shape each channel with virtual hosts, authenticate publishers and players through HTTP hooks that consult your own backend, and record live streams to disk as DVR archives for replay. Forwarding republishes a stream to YouTube, Facebook, or another SRS instance, and origin clustering lets edge servers pull from a central origin so one ingest feeds viewers in several regions. The built-in HTTP API reports streams, clients, and server health for monitoring, and GB28181 support ingests surveillance camera networks alongside creator broadcasts. Configuration lives in a single reloadable file, so changing a vhost or enabling HLS rarely means restarting the listeners your audience is attached to. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

SOGo adds shared calendars, address books, and a modern webmail interface to your existing Dovecot, Postfix, or Cyrus mail setup, turning familiar infrastructure into a full Exchange competitor. Rather than replacing your IMAP and SMTP servers, SOGo layers collaboration on top of them, becoming the missing link between raw mail delivery and what users actually expect from a workplace communication platform. The ActiveSync implementation synchronizes email, contacts, calendars, and tasks natively with iPhones, Android devices, and Windows without requiring users to manually configure CalDAV endpoints. CalDAV and CardDAV compliance ensures Apple Calendar, Thunderbird (via the official SOGo Connector extension), GNOME Evolution, and Android via DAVx5 all connect without plugins or workarounds. The web interface uses AngularJS Material design with responsive layouts, offering folder management, drag-and-drop calendar scheduling, contact groups, resource booking, and delegation. Shared calendars support free-busy lookups, iMIP event invitations, and per-user ACL permissions for fine-grained access across organizational units. Built on Objective-C with the GNUstep foundation, SOGo delivers exceptional performance: hundreds of concurrent ActiveSync connections from mobile devices alongside webmail and calendar traffic with sub-second response times. With 2,095+ stars and 116 releases, the project has proven its stability in production environments supporting thousands of users. The Docker deployment runs alongside PostgreSQL and memcached.

Instead of querying a private registry with curl and its HTTP API, open Docker Registry UI and click through repositories, tags, digests, and layers in a browser. The catalog groups images by namespace, shows tag counts, and filters as you type in the search bar, which Ctrl+F or F3 focuses. Each repository's tag list shows creation date, size, content digest, and CPU architecture, sorts numerically, and copies a ready-made pull reference with one click. A history page expands any tag into its operating system, entrypoint, environment variables, exposed ports, and layer-by-layer build steps, and a Dockerfile view reconstructs the file from those steps. The same view also covers multi-architecture images and OCI Helm exports. When the registry allows deletion, tags go one at a time or in bulk with checkboxes, Alt+Click for a whole page, and Shift+Click for a range. One interface can switch between several registries from its menu, or be locked to a single registry with your own title. Basic authentication passes through the browser, and a built-in proxy option forwards requests to your registry container so CORS needs no configuration. Light, dark, and automatic themes come with color variables for custom branding, and a weekly notice announces newer releases. 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.

Google Analytics without the cookie banner or the maze of menus: Rybbit puts web and product analytics for every site you run on one readable dashboard, hosted on your own server. Pageviews, sessions, unique users, bounce rate, session duration, traffic sources, campaigns, devices, and countries update in real time beside a live visitor count. Session replay lets you watch the visits behind the numbers, and user profiles tie identified visitors to their sessions and events. Funnels pinpoint where conversions leak, journeys chart the paths people take through a site, retention reports show who comes back, and goals track conversions from page visits, custom events, and autocaptured clicks. Custom events carry JSON properties, filters slice every report across more than 15 dimensions, saved segments reapply them in one click, and location tracking drills from country to region to city on interactive maps, with optional 3D globe views through a Mapbox token. Error tracking connects JavaScript failures to the affected sessions, so a spike in errors leads straight to the visits that explain it. One install serves unlimited sites and organizations with role-based access, public dashboards share a site's stats through a link, and a tracking script of about 11 KB compressed collects data with no cookies and no consent banner. 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.

No cookies, no fingerprinting, no cross-site tracking, no personal data collection - Umami's privacy contract is the foundation of the open-source web analytics platform. IP addresses are hashed rather than stored, which makes it GDPR, CCPA, and PECR compliant by default - the consent banner can come off the site entirely. The tracking script is under 2 KB, roughly 20x smaller than Google Analytics, so measurement stops being a page-weight tax. The dashboard covers the core metrics - pageviews, visitors, bounce rate, visit duration, referrers, browsers, devices, and countries - with any date range and filtering by country or device. Beyond pageviews, custom events track clicks, form submissions, and signups via a data attribute or one JavaScript call, and advanced reports add funnels, user journeys, retention and cohort analysis, goals, and automatic UTM campaign tracking. Anonymous session views show individual visitor activity without identifying anyone. Teams share websites with role-based access, one instance manages unlimited sites, and a full REST API exposes every metric programmatically. MIT-licensed and self-hosted on PostgreSQL or MySQL via Docker, your analytics data never leaves your infrastructure.