Deep Dive

Managing multiple social media accounts often means juggling platforms, rising subscription costs, and limited control over your own data. In this episode, we explore MixPost, a self-hosted, open-source social media management platform that offers a powerful alternative to tools like Buffer - without recurring fees or platform-imposed limits.

MixPost centralizes content creation, scheduling, and analytics across 11 major platforms, including Facebook, Instagram, LinkedIn, TikTok, YouTube, and emerging networks like Mastodon and Bluesky. Its intuitive dashboard, calendar view, and automation tools help streamline workflows, while advanced features like post versions allow you to tailor content for each platform from a single interface.

The key difference lies in ownership and control. By self-hosting MixPost, you keep your data on your own infrastructure, eliminate per-user or per-client pricing, and scale freely as your needs grow. Modern deployment tools like Docker make setup more accessible than ever, reducing the technical barrier traditionally associated with self-hosting.

For agencies and teams, MixPost includes collaboration workspaces, approval workflows, and multilingual support, turning it into a full social media command center. Its centralized analytics provide cross-platform insights, helping you optimize performance without jumping between multiple dashboards.

If you’re tired of subscription lock-in, rising costs, and limited flexibility, this deep dive shows how MixPost represents a strategic shift toward owning your marketing infrastructure - and unlocking its full potential.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

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Email might feel simple - but behind every message lies a complex infrastructure designed to guarantee trust, authenticity, and reliability. In this episode, we dive into Sendmail, one of the most influential mail transfer agents (MTAs) in internet history, and explore how enterprise-grade messaging systems secure the backbone of global communication.

We examine Sendmail Sentrion, the hardened enterprise platform used by organizations with massive messaging needs - from global banks to multinational corporations. These systems must process enormous volumes of email while maintaining strict security, reliability, and long-term infrastructure stability.

The episode breaks down the cryptographic foundations that make this possible. PGP signing keys verify the integrity of the software itself, ensuring that administrators install authentic, untampered code. Meanwhile, DKIM (DomainKeys Identified Mail) secures individual messages by cryptographically signing emails so recipients can verify both the sender’s domain and the message’s integrity.

Beyond technical safeguards, modern email security also focuses on the human factor. Tools designed to improve human resilience aim to reduce risks like phishing by analyzing behavior, measuring vulnerability, and helping organizations strengthen the weakest link in the security chain - the user.

Finally, we explore the strict communication standards that still govern the email infrastructure community today: plaintext communication, strict adherence to RFC protocols, and encrypted vulnerability reporting. These seemingly old-fashioned practices reveal an important lesson - when the stakes are highest, stability and precision outweigh convenience.

This deep dive uncovers the hidden layers of trust that keep email functioning as one of the internet’s most essential systems.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

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Who really owns the content you post online? In this episode, we dive into Known, an open-source social publishing platform built around a simple but radical idea: you should be able to publish photos, notes, stories, and updates with the ease of social media—without giving up control of your data, your domain, or your digital identity.

Known bridges the gap between the convenience of mainstream social platforms and the sovereignty of self-hosting. It offers a responsive, mobile-friendly publishing experience, supports multiple content types, and makes sharing easy with tools like bookmarklets, hashtags, rich text editing, and custom HTML. The result is a platform that feels modern and accessible while still giving users full ownership of their site and content.

A major part of that ownership comes through custom domains, privacy controls, and multi-author support. Whether you want a private journal, a collaborative publication, or a public personal website, Known gives you the flexibility to decide how your content is shared and who can participate. It also supports multiple feed formats like RSS, JSON, XML, and KML, making your content portable and machine-readable rather than locked inside a proprietary app.

We also explore Known’s connection to the IndieWeb movement, a broader effort to create a web where independently owned sites can interact directly with one another—much like email works today. Instead of depending on a central platform to mediate social interaction, Known helps turn your own website into the center of your online presence.

If you’ve ever wondered whether social media convenience must always come at the cost of ownership, this deep dive into Known shows that there is another path: an open, decentralized social web where your content truly belongs to you.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

What if AI didn’t just answer questions—but actually used your computer for you? In this episode, we explore Computer Use Agents (CUA), the emerging infrastructure that allows AI systems to interact with real desktop environments—clicking buttons, typing text, navigating applications, and completing complex workflows across multiple tools.

CUA provides the crucial security and isolation layer that makes this possible. By running AI agents inside sandboxed virtual machines or containers, it allows them to safely control operating systems like macOS, Linux, or Windows without risking damage to the host machine. Think of it as “Docker for AI agents that control computers.”

We break down the architecture behind this new paradigm: the containerized environments that isolate agents, the Computer SDK that provides a unified API for mouse and keyboard control, and the Agent SDK that connects large language models to these environments. Combined with tools like Gradio for human interaction, these components transform language models into fully functional digital operators.

The episode also explores the evolving design patterns of modern AI agents—including composed agents, where specialized models handle perception (seeing the screen) while others handle reasoning and planning. Benchmarks, performance testing, and scalable deployment models reveal how this technology is transitioning from research experiments into production-ready automation.

CUA represents a major shift in how humans interact with software: instead of manually navigating interfaces, we may soon collaborate with AI agents that operate computers on our behalf.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

Notifications power modern apps - but managing them across email, SMS, push, and chat can quickly become a complex web of APIs, vendors, and fragile integrations. In this episode, we explore Novu, an open-source notification infrastructure platform designed to centralize and simplify how applications communicate with users.

Novu provides a unified API that orchestrates notifications across multiple channels - such as SendGrid for email, Twilio for SMS, Firebase for push notifications, and Slack or Discord for team alerts - without developers having to maintain separate integrations for each provider. By acting as a central control layer, it handles routing, user preferences, and fallback logic automatically.

One of Novu’s standout features is its embeddable in-app notification inbox, a ready-to-use UI component that can be integrated with only a few lines of code. It includes built-in capabilities like real-time updates, read/unread states, user-controlled notification preferences, and snooze functionality, saving teams from building complex notification systems from scratch.

Beyond delivery, Novu introduces intelligent notification workflows, including tools like a digest engine that groups multiple events into a single message to reduce notification spam. Combined with a modern React-based email template system, it enables both product teams and developers to manage communication more effectively.

With strong open-source momentum - tens of thousands of GitHub stars and hundreds of contributors - Novu is emerging as a powerful solution for teams looking to streamline notification infrastructure while improving the user experience.

This deep dive explores how centralizing notifications can transform them from noisy interruptions into thoughtful, context-aware communication systems.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

What happens when open tools meet proprietary infrastructure? In this episode, we explore DavMail, an open-source gateway that allows standard email clients like Thunderbird to work seamlessly with Microsoft Exchange, a system built around closed protocols.

DavMail acts as a translation layer, converting Exchange’s proprietary communication methods into open standards such as IMAP, SMTP, CalDAV, CardDAV, and LDAP. This allows users to access email, calendars, contacts, and corporate directories using the tools they prefer instead of being locked into Microsoft Outlook. By routing communication through Outlook Web Access (OWA), DavMail cleverly bridges the gap between open clients and Exchange servers.

The project highlights a larger issue in modern IT: vendor lock-in. Organizations often rely on proprietary ecosystems that restrict software choice, making open alternatives difficult to use without translation layers like DavMail. Its importance is underscored by the fact that parts of the project - such as CardDAV contact synchronization - were supported by the French Ministry of Defense, which needed secure, auditable alternatives to closed systems.

But the future of DavMail also reveals the constant tension between open source and proprietary platforms. Microsoft is deprecating Exchange Web Services (EWS), forcing the project to rebuild its backend around the Microsoft Graph API in version 7.0 just to maintain compatibility.

This episode examines how DavMail preserves freedom of choice in a locked-down ecosystem, while also highlighting the ongoing technical race required to keep open-source interoperability alive.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

Managing automated workflows across servers, scripts, and services often turns into a fragile web of cron jobs, hidden dependencies, and scattered logs. In this episode, we dive into Dagu, a lightweight workflow orchestration tool designed to simplify complex automation without the heavy infrastructure required by traditional platforms.

Dagu uses Directed Acyclic Graphs (DAGs) defined in simple YAML configuration files, allowing teams to clearly describe how tasks depend on one another. Instead of rewriting existing scripts or learning a new framework, Dagu orchestrates what you already have - whether it’s Python scripts, shell commands, remote SSH tasks, Docker containers, API calls, or even GitHub Actions.

One of Dagu’s biggest advantages is its simplicity: it runs as a single binary with zero external dependencies, meaning no database, no complex setup, and no cloud infrastructure required. Workflows, logs, and execution history are stored in simple files, making deployment, backups, and troubleshooting dramatically easier.

Despite its lightweight architecture, Dagu includes production-ready features like automatic retries with exponential backoff, distributed execution, queue management, nested workflows, conditional steps, timezone-aware scheduling, and modern authentication via OIDC. It’s designed for teams who want powerful orchestration while avoiding the operational overhead of heavier systems like Airflow.

If you’re struggling with brittle cron setups or looking for a simple way to orchestrate complex automation pipelines, this deep dive into Dagu shows how declarative configuration and lightweight design can bring clarity to workflow chaos.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

Modern messaging apps look sleek on the surface—but many still rely on protocols designed decades ago. In this episode, we explore SAMA (Simple But Advanced Messaging Alternative), an open-source chat server project aiming to modernize the foundation of real-time communication.

SAMA is built entirely in JavaScript and powered by the ultra-efficient uWebSockets.js engine, enabling high concurrency with minimal memory usage. The project positions itself as a modern alternative to XMPP, the long-standing open messaging protocol whose XML-based structure can introduce significant overhead, higher latency, and increased battery usage on mobile devices.

Instead of relying on verbose XML and complex extension systems, SAMA focuses on a lean, performance-first protocol designed for modern messaging workloads. Core features - such as push notifications, conversations, and activity tracking - are built directly into dedicated APIs, simplifying development and integration for new messaging applications.

The ecosystem already includes web and Flutter clients, making the platform accessible across mobile and desktop environments, along with a public demo that allows anyone to test the full stack without running their own server. With an open-source GPLv3 license, an active release cycle, and a growing community on GitHub and Discord, the project is positioning itself as a potential next-generation messaging backbone.

If the future of messaging demands faster, lighter, and more efficient protocols, this deep dive into SAMA explores whether a modern alternative can challenge decades-old infrastructure- and what it might take for a new open standard to emerge.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

Your browser tabs are probably full of articles, resources, and links you meant to revisit - but never do. In this episode, we explore Digibunch, a lightweight open-source tool designed to turn scattered bookmarks into clean, curated collections called “bouquets of links.”

Digibunch makes it easy to gather related resources into a single, well-structured page that can be shared with one simple URL. Whether you’re onboarding new team members, sharing research with students, or organizing your own knowledge, it replaces messy link dumps with clear, intentional collections.

But Digibunch is about more than organizing links. Built with a simple and durable tech stack - PHP and SQLite - it’s easy to self-host and maintain, giving users full control over their data. Its GNU AGPLv3 license ensures that improvements remain part of the community, preventing companies from turning the project into proprietary software.

We also dive into the philosophy behind the project: transparency, community-driven development, and hosting in the open-source ecosystem on Codeberg rather than corporate platforms. From its lightweight architecture to its community-supported funding model, Digibunch reflects a broader shift toward owning your digital knowledge instead of storing it inside proprietary silos.

If you’ve ever felt overwhelmed by the chaos of bookmarks, tabs, and scattered resources, this deep dive explores how a simple, open-source tool can help you curate - and truly control your information.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!

What would a chat app look like if you removed the servers entirely? In this episode, we dive into ChitChatter, a secure peer-to-peer messaging platform designed to eliminate centralized infrastructure, persistent chat logs, and the risks that come with them.

ChitChatter uses a decentralized web mesh architecture built on WebRTC, allowing users to communicate directly through their browsers with end-to-end encryption. Messages are truly ephemeral—never stored on servers or written to disk—meaning conversations disappear the moment a session ends. By removing central databases and API servers, the platform eliminates common surveillance and data-breach targets while minimizing legal and commercial pressure points.

We explore how the system works in practice: generating secure room links, establishing peer-to-peer connections, and falling back to relay servers only when direct connections fail. We also discuss the critical role users play in securely sharing room keys, and how a simple mistake during that initial handshake can undermine an otherwise secure system.

Beyond text messaging, ChitChatter supports real-time video, audio, screen sharing, and direct file transfers of unlimited size, all happening directly between peers. With no analytics, telemetry, or tracking—and with fully open-source code available for public auditing—the project emphasizes transparency and user sovereignty over convenience.

But decentralization comes with trade-offs. Self-hosting creates isolated communication islands, raising important questions about the balance between absolute control and global connectivity.

If you’re concerned about the long-term privacy of your conversations—or curious how modern communication can function without centralized infrastructure—this deep dive into ChitChatter reveals what happens when you truly remove the servers.

Let’s have a look at your digital challenges together. What tools are you currently using? Are your processes optimal? How is the state of backups and security updates?

Digital Souvereignty is easily achived with Open Source software (which usually cost way less, too). Our division Safeserver offers hosting, operation and maintenance for countless Free and Open Source tools.

Try it now!