My Raspberry Pi runs my self-hosted tools 24/7 for less than the cost of a coffee subscription

Self-hosting is supposed to be an escape from overpriced, privacy-invasive tools. The whole thing is starting to feel expensive. You'll find users boasting about their impressive home lab with all the possible automations, tools with AI integration, and more. Every new DIY user can afford to buy enterprise-grade hardware, used GPUs, and workstations to build the perfect home lab. An SBC like a Raspberry Pi is the embodiment of a simple home server that can handle a few things.

You can choose from several models, from as cheap as a Raspberry Pi Pico to the latest and greatest Raspberry Pi 5. I use it to host a few tools 24/7, and it's always available when I need it. The whole setup costs less than a coffee subscription and makes you think about what's possible.

I don't need a desktop to host my tools

A Raspberry Pi fits perfectly fine

Traditional software assumes you need a good enough computer to run it. A desktop needs to both run the tool and display it on a monitor with as much responsiveness as possible. But the server is very different from this usual setup. Ideally, a server hosts all the files required to run a tool with a web portal for GUI access. Developers understand the resource constraints and try to make it as lightweight as possible. The underlying OS also needs resources to work on a desktop, but an SBC can use a very lean, non-GUI OS.

So, even the weakest Raspberry Pi board with just 512MB of memory can host multiple tools without crashing. I've used one Raspberry Pi Zero 2 W to host a password manager for a year. I recently switched the whole setup to Docker and added a couple of tools and a self-healing script. Even with all this, there is still some memory left after running three tools, an OS, and Docker concurrently. But you have to be really picky with the tools.

It's baffling that OmniTools can run on just 30MB of memory and offload all processing to the client’s computer. Tools like this make an SBC home server possible even on old, outdated hardware. If you have a newer board like the Raspberry Pi 4 Model B or the Raspberry Pi 5 with 2GB or more memory, the server experience becomes even better. Self-hosted tools like Nextcloud and Jellyfin can take advantage of the powerful hardware for data processing and transcoding.

Evade subscriptions

No need to buy everything

Companies love to raise subscription rates at will, and it feels bad to be at the receiving end. You feel locked into a system where the software feels irreplaceable, and you cannot escape it. Five years back, the self-hosted tools library could feel severely limited. But today, there's a free, completely local alternative for every tool you use.

I relied on Adobe Acrobat for a long time, and it wasn't exactly cheap. I wasted $15–20 every month for sporadically using the tool, and you might be in the same boat. But a lightweight tool like BentoPDF is a perfect alternative to Adobe Acrobat. I host it on a Raspberry Pi Zero 2 W, along with OmniTools and Vaultwarden. It also uses client-side processing, so the SBC doesn't need to do any heavy lifting.

Imagine reliable alternatives to paid tools that can fully replace the original. My passwords stay on the SBC, and I can edit documents and convert files all on a single computer. All I had to do was pay a one-time cost for the board and the SD card. Total setup and replacement will never exceed $30, barely enough for a one-month coffee subscription.

Power usage is not a concern

Probably less than charging your phone

One of the most overlooked aspects of an SBC is its power consumption. A desktop can draw 15–25 watts to run and host your tools, while the Raspberry Pi can do it for under 5W. If you build a small-scale server on a Raspberry Pi Zero 2 W, it won't even go beyond the 5-watt mark. Connecting external drives can increase power demand, but the overall setup would still have a negligible impact on your power bills. It's important to pay attention to electricity usage because it's a recurring cost.

Ask any experienced home lab user, and they'll agree that the hardware is a one-time investment. But device electricity bills tend to eat up a noticeable portion of the total. In my case, deploying BentoPDF, OmniTools, and Vaultwarden on a thin client is a sheer waste of electricity. The system uses a laptop-grade CPU and needs 10–15 watts to work. Running something so lightweight on it would be an absolute waste of both computing and power resources.

I’ve been using this specific Raspberry Pi setup for a year, running 24/7, without any major outages. The tools are available on my local network even if the ISP is down, and I’ve deployed Tailscale system-wide for remote access and HTTPS support. To ensure local availability even during an internet outage, you can use a power bank to power an SBC like mine. I have a home-wide inverter connection, so electricity outages don’t impact me much. If you cannot implement the inverter setup, a power bank for your SBC and the router can ensure maximum uptime.

A reliable home server

I understand that an SBC can never measure up to a desktop, a mini PC, or server infrastructure in performance. But not all self-hosted tools require that level of resources or performance, and sometimes a small, credit-card-sized computer can do the trick. You can buy a couple of Raspberry Pi Zero 2 W models and host the tools I mentioned on one. The second board could be your Pi-Hole and Unbound setup for privacy and ad-blocking. For local cloud storage, a media server, or home automation, you’ll need a more powerful board, like a Raspberry Pi 5 (2GB or higher).