Digital Sovereignty: Taking Back Control in a World Owned by Big Tech

Your emails live on someone else's servers. Your contacts, calendar, documents, photos, health data, location history, political leanings, shopping habits — all of it sits in data centres you'll never visit, governed by terms of service nobody reads, monetised in ways you'll never fully know. The five tech giants — Google, Apple, Meta, Amazon, Microsoft (GAMAM, if you're keeping score) — have quietly become the infrastructure of modern life. And infrastructure, once embedded, is almost impossible to pull out.

But here's the thing: you don't have to accept it.

The open source movement has spent decades building the alternatives. Not half-baked, hobbyist alternatives — production-grade, enterprise-capable tools that governments, universities, hospitals, and businesses around the world depend on every single day. The problem isn't that the tools don't exist. The problem is that most people don't know they exist, or have been conditioned to believe that "free" only comes wrapped in surveillance.

Let's fix that.

Email is foundational. If your email is compromised — or quietly read by a platform provider — so is everything else: your bank, your health, your identity.

Proton Mail offers end-to-end encrypted email from a Swiss-based provider with a proper legal framework around privacy. It's not a novelty product — Proton now offers a full suite including calendar, drive, and VPN. Journalists, activists, and ordinary people who've simply had enough use it daily.

For messaging, Signal remains the benchmark for encrypted communication. Matrix / Element goes further — a federated, open protocol that means no single company owns the network. You can run your own server if you want to. Many organisations already do.

The pandemic exposed something uncomfortable: that publicly-funded research is routinely locked behind paywalls that even universities struggle to afford, that data which could save lives is siloed in proprietary systems, and that the infrastructure of scientific knowledge is far too dependent on commercial interests.

PubMed and Europe PMC provide open access to biomedical literature. The Open Access movement is reshaping academic publishing. arXiv has made pre-print science freely available for decades. The argument that open science produces inferior knowledge has been thoroughly demolished — the Linux kernel, the Human Genome Project, and COVID vaccine mRNA research all had open components that accelerated progress.

In healthcare, electronic patient record systems built on open standards rather than proprietary lock-in are increasingly being recognised as critical infrastructure — not a luxury. NHS trusts are paying billions to get out of proprietary systems that hold their own data hostage.

GnuCash has been quietly helping individuals and small businesses manage double-entry bookkeeping for over two decades. Firefly III is a more modern, self-hosted personal finance manager — connect it to your bank via open banking APIs, run it on your own server, own every row of your own financial history.

For accounting in small organisations, Odoo Community and ERPNext provide full business management suites — accounting, inventory, CRM, project management — entirely open source. These aren't toys. They run real businesses.

At the infrastructure level, GNU Taler is building genuinely privacy-preserving digital payment systems — a rethink of how electronic cash could work if it were designed for citizens rather than card networks. The European Central Bank has open infrastructure components in its digital euro project. The ground is shifting.

The principle matters as much as the tools: your financial data is some of the most sensitive information about you. It should not be a product.

Food data is just one thread of something much larger. Open Data — the principle that certain data, particularly publicly generated or publicly funded data, should be freely available for anyone to use, share, and build upon — is one of the most powerful and underappreciated forces in modern technology.

OpenStreetMap is the obvious example: a free, editable map of the entire world built by volunteers and used by humanitarian organisations, governments, and thousands of applications. Apple Maps, Meta, and Amazon all use it. When disaster strikes, the Humanitarian OpenStreetMap Team mobilises to map affected areas in real time, enabling aid organisations to operate in places that commercial mapping ignores.

Wikipedia — the world's largest encyclopaedia — runs on MediaWiki, which is open source. The Wikimedia Foundation that stewards it is a non-profit. The content is created by volunteers under open licences.

CKAN is the open source data portal platform that powers data.gov.uk, the EU Open Data Portal, and dozens of national and local government data repositories. The infrastructure of government transparency is itself open source.

Our World in Data brings together global datasets on health, poverty, climate, education, and more — free to use, open to scrutiny, built for public understanding rather than private advantage.

The pattern is consistent: wherever you look, the most trusted, most durable, most genuinely useful data infrastructure tends to be open. Because openness invites scrutiny. And scrutiny is the best quality control that exists.

Not just in a worthy, hair-shirt, I'm-doing-the-right-thing way — though you will feel that too. It's joyful because open source is fundamentally about curiosity and craft. The source code is there. The documentation is there. The community is there, usually on IRC, Matrix, or the Fediverse, usually full of people who are unreasonably generous with their time and knowledge.

You start by switching your email. Then you start wondering about your router firmware. Then you end up running your own Nextcloud instance on a Raspberry Pi in the spare room, contributing bug reports upstream, and explaining to bemused family members why you'd rather run LineageOS than accept whatever Google has decided your phone should do today.

You build things that are actually yours. You understand them at a level that proprietary software will never let you reach. You find communities of people who care about the same things you do — not because they're monetising that care, but because they genuinely believe that how we build technology shapes how we live together.

And then you realise the rabbit hole has no bottom, and that's not a bug. That's the point.

Running an interesting open source stack? We'd love to hear about it — drop us a message or find us on Mastodon.