NETROOM
Remote desktop written in Rust. You connect to another screen with no account and, more to the point, no dependence on someone else's servers - run your own relay and the traffic never touches vendor infrastructure. Clients exist for Windows, Linux, macOS, Android and iOS, with file transfer and audio forwarding. It feels a lot like TeamViewer minus the sudden 'commercial use detected' lockouts. AGPL-3.0. The public relays are congested, so a self-hosted one is close to mandatory; extras ship as the paid Server Pro.
A full backend wrapped around plain Postgres: authentication, auto-generated REST and GraphQL, realtime subscriptions, file storage, Deno edge functions and vector search for AI work. The real difference from Firebase is that underneath sits an actual relational database - you write the schema and the SQL, and row-level security enforces access. Assembled from open pieces like PostgREST, GoTrue and Realtime, Apache 2.0 licensed, self-hostable with Docker Compose and a CLI for local dev. The cloud free tier pauses idle projects.
Uptime monitoring for your own server: HTTP(S), TCP ports, ping, DNS records, keyword matching on a page, JSON queries, WebSocket, Docker containers and push checks for cron jobs. Over 90 notification channels including Telegram, Discord, Slack, Gotify and email. It also tracks SSL certificate expiry and can publish public status pages. Needs Node.js 20.4+ or just Docker, and stores everything in SQLite, so there is no external database to run. MIT-licensed and genuinely a one-command install.
Heads up: the repo has been renamed to calcom/cal.diy. It is now the MIT-licensed community edition, and the README says plainly that production and commercial use should go to Cal.com - hosted or enterprise on-prem - while cal.diy targets personal, non-production setups. The scheduling itself is all there: event types, availability rules, team and round-robin bookings, calendar and video integrations, webhooks and embeddable widgets. Self-hosting expects real server and database skills.
A whole backend in one box: auth, databases, storage, functions, realtime, messaging and hosting, either as a Docker stack you run yourself or on Appwrite Cloud. SDKs cover web, Flutter, Android, iOS and React Native, which makes it an easy fit for mobile teams. Licensed BSD-3-Clause, so no copyleft strings. The cloud free tier gives 5GB bandwidth, 2GB storage and 75k monthly active users, but caps you at two projects and pauses them after a week idle. Pro starts at $25/month.
A TypeScript framework for building AI agents that handle multi-step work. Its pitch is configurable determinism: you decide where the agent improvises and where it follows a fixed path. Two pieces ship together - AgentDock Core, a backend-first library that stays provider- and framework-agnostic, and a full Next.js client as the reference implementation. MIT licensed and still labelled beta, with a modest ~1.7k stars. AgentDock Pro cloud is announced but not out, so plan on self-hosting.
A batteries-included workspace for local AI: drop in your documents, get RAG search over them, plus agents and multi-user workspaces with permissions. Runs as a desktop app or in Docker, and speaks to both local models and hosted APIs. The point is that your documents never leave your machine. MIT licensed, very actively maintained, around 65k stars. The catch is hardware - running models locally wants a decent GPU or a lot of RAM, otherwise lean on an external provider.
A desktop client for language models: one interface over GPT, Claude, Gemini, DeepSeek and local models through Ollama. Builds exist for macOS, Windows and Linux, plus mobile and web. The appeal is that your API keys and chat history sit on your own disk rather than in someone's account. Note the repo moved from Bin-Huang to chatboxai/chatbox. The open version is GPL-3.0, and a paid edition is sold alongside it with extra features, so check what actually lands in the open source tree.
A single desk for support: website live chat, email, social networks and messengers all land in one inbox with teams, labels and automation rules. Built on Rails, deployable via Docker or on your own hardware. The core is MIT, but the enterprise/ directory carries a separate licence - classic open core, so check which features live behind it. The hosted free tier is thin: 2 agents, 500 conversations a month and 30-day retention. Paid plans start at $19 per agent per month.
Monitoring you own outright: uptime, response times, server hardware health and incidents in one self-hosted dashboard. Checks cover HTTP, ping, TCP, gRPC, DNS and SSL expiry, with alerts to Slack, Telegram, Teams and PagerDuty. Deploy via Docker, Helm or bare metal. The difference from SaaS monitoring is the absence of per-host and per-seat metering - there is a single tier and it includes everything. Licensed AGPL-3.0, so if you run it as a service for others your modifications must be published.
A macOS code editor written in Swift and SwiftUI rather than wrapped in Electron. That is the whole point: it launches instantly, stays light on memory and behaves like a native Mac app - tabs, splits, built-in git, tree-sitter highlighting and LSP support. Free forever and MIT licensed, developed by the community. Worth knowing that it has not reached a stable release yet, and plenty of things you expect from VS Code are simply missing, so treat it as a promising second editor for now.
A Python performance optimiser: it feeds your functions to LLMs, generates candidate rewrites, proves they still behave correctly with tests, benchmarks them for speed, and opens a merge-ready pull request with the winner. Runs as a CLI, as a GitHub Action over incoming PRs, or as a VS Code extension. Pydantic, Roboflow and Langflow use it. The thing to check first is the licence - Business Source License 1.1, meaning production use requires a separate commercial agreement with CodeFlash.
Your own PaaS on your own hardware: point it at a VPS, give it repo access, and you get push-to-deploy, automatic SSL, managed databases, backups and 280-plus one-click services. Built on Laravel with everything running in Docker. Apache-2.0 licensed, and self-hosting is free with no feature gates - you only pay for the cloud version, where Coolify runs the control instance for you. The server itself, and keeping it patched and secure, is still entirely your job.
Points at a SQL database you already have and turns it into a headless CMS with an admin app, REST and GraphQL APIs, field-level permissions, webhooks and a visual automation builder. It does not impose a schema - it works with your existing tables, which makes it unusually good for wrapping legacy databases. One important change: the licence is now the Monospace Sustainable Core License 1.0, which is source-available. You may use and modify it, but competing offerings and bypassing licence keys are barred.
The forum engine that has held the bar for over a decade: infinite scroll instead of pagination, user trust levels, real moderation tooling, mailing-list style notifications you can reply to from email, full-text search, and a large catalogue of plugins and themes. Rails and Ember on PostgreSQL, licensed GPL-2.0. Install it with the official Docker script - the stack is hungry, wanting a couple of gigs of RAM and a working SMTP provider. Discourse's own hosting is paid, and it funds the project.
Document e-signing you can host yourself: upload a PDF, place the fields, send it to signers, get a signed file back with an audit trail. It supports the PAdES standard and ships an API plus embedded signing so you can put it inside your own product. Licensed AGPL-3.0, which matters a lot if you plan to build a SaaS on top. The hosted free plan allows 5 documents a month with up to 10 recipients each; unlimited individual signing is $25/month and team plans start at $40.
Meta's React-based documentation site generator. You write Markdown or MDX and get a static site with docs versioning, localisation, dark mode, Algolia DocSearch integration and a blog out of the box. Customisation happens through ordinary React components, so you can swap out any part of the theme by shadowing it. MIT licensed and deployable anywhere, GitHub Pages included. It is a natural fit if your team already lives in React; for a purely content site with no developers around it is overkill.
A self-hosted PaaS built on Docker Swarm: deploy apps in any language, run MySQL, PostgreSQL, MongoDB, MariaDB and Redis with automated backups, use docker-compose natively, route through Traefik and watch resource usage in real time. It scales across multiple nodes. The core is Apache-2.0, but a proprietary directory sits under Dokploy's own source-available licence requiring an agreement for production. Self-hosting is free; Dokploy Cloud starts at $4.50 per server per month.
A short-link platform built around analytics and attribution: custom domains, a UTM builder, real-time click stats by device and geography, conversion tracking and partner payouts. There is a REST API, webhooks and SDKs, so it slots into a product rather than living only in the marketing stack. Open source with a caveat - the ee/ directories carry a separate commercial licence. Self-hosting is possible but the stack is heavy, pairing Next.js with Clickhouse and Tinybird for the analytics side.
Kanban boards for project work: cards, custom properties, board, table, gallery and calendar views, plus templates. It runs as a personal desktop app on macOS, Windows and Linux, or as a small multi-user server. Important: the repository moved to the mattermost-community org and the README now carries a warning that it is unmaintained and looking for a maintainer. The Mattermost plugin version lives separately at mattermost-plugin-boards. Not a safe foundation for team workflows right now.
Surveys where your users actually are: link surveys, in-product surveys fired by triggers and events, conditional logic, hidden fields, file uploads and single-use links. Web, iOS and Android SDKs ship alongside a full API. The core is open but the ee/ directory sits under a separate licence, while the SDKs are MIT. The cloud runs in Frankfurt, which helps for GDPR: the free tier gives one workspace and 250 responses a month, then $74. Self-hosting removes the response caps.
HR and payroll in one package: recruitment, onboarding and exits, shifts and attendance, leave management, expense claims, appraisals, tax handling and payroll runs. A mobile app covers leave requests and check-ins. Licensed GPL-3.0. It installs on top of the Frappe Framework and expects ERPNext to be present - this is a module inside an ecosystem rather than a standalone app, which is the main thing to know before committing. Self-hosting is free; Frappe Cloud starts around $5/month.
Endpoint monitoring with a status page attached, configured entirely from one YAML file. It checks HTTP, TCP, ICMP, DNS, certificates and database queries, with conditions written as expressions over the status code, response time or JSON body. Alerts go to Slack, Telegram, PagerDuty, Discord, email and dozens of other providers, and incidents are tracked. Written in Go, so it is a single binary or a tiny container with near-zero memory overhead. Apache-2.0 licensed.
A publishing platform for people who earn from what they write: posts, newsletters, paid subscriptions through Stripe, tiered memberships, built-in SEO and Handlebars themes. Content and Admin APIs mean Ghost works happily as a headless backend behind your own frontend. Node.js and MIT licensed. Self-hosting is free and reasonably simple, though email delivery and payments are still separate services you wire up. Managed Ghost(Pro) is paid, and it funds the non-profit foundation that owns the project.
Authentication built around passkeys: WebAuthn and FIDO2 as the primary path, with passwords, magic links, social login, MFA and SAML SSO alongside. It ships drop-in web components for the login form, so integration is an evening's work rather than a sprint. The Go backend is self-hostable, the core is open, and the elements and frontend-sdk directories carry their own licences. Hanko Cloud is free for 10,000 monthly active users across 2 projects, then $29/month plus $0.01 per extra user.
An attempt to fold a team's whole toolchain into one app: issue tracker, chat, documents, CRM, an HR module, an ATS for hiring, a virtual office with calls, and time tracking. Everything is linked, so a task, its discussion and its spec live next to each other rather than in three separate subscriptions. Licensed EPL-2.0 and free to self-host. The cloud bills only for consumed resources - storage, call bandwidth and compute - with unlimited objects. The stack is heavy and deployment is not trivial.
A video player for macOS that looks and behaves like a native Mac app while running mpv underneath, which means it plays essentially any format without codec hunting. It supports Touch Bar, picture-in-picture, dark mode, thorough subtitle handling with auto-download, playlists, trackpad gestures and JavaScript plugins. Written in Swift, GPL-3.0 licensed, entirely free and still actively developed. Mac only - there is no Windows or Linux build and none is planned.
A secrets store for teams: environment variables, keys and certificates in one place with versioning, point-in-time recovery, rotation, audit logs and access controls. Over a hundred integrations, a CLI and an agent proxy that injects secrets into running processes. PKI and privileged access management modules sit alongside. The core is MIT while the ee/ directories are closed. The free tier covers 5 identities and unlimited projects; paid starts at $20 per identity per month. Self-hosting is supported.
Editors' picks