Why Keep Using an Old PowerPC Mac in 2026

We know how good Apple Silicon is — it's what I use as my daily driver. That's not the point here.

A PowerPC Mac running Tiger or Leopard is now over 20 years old — and in most cases, it still boots, still runs its original software, and still has a keyboard and screen that feel genuinely pleasant to use. A PowerBook G4's keyboard is honestly still hard to beat for long stretches of writing. Throwing that away just because it can't browse a modern website comfortably feels like a waste. This page is where we thought through what actually gets in the way on an old Mac today, and what you can still do about it.

What Actually Stops Working (Hint: It's the Software)

It's rarely the hardware that gives up first — it's usually the networking software. Most of today's web runs on TLS versions and JavaScript that Tiger/Leopard-era browsers were never built for, so plain browsing gets difficult fast. File sharing is another wall: modern NAS boxes, Windows PCs, and current Macs speak SMB3, which Tiger's Finder simply doesn't understand, so pulling files on or off the machine becomes its own project.

A Few Quirks to Expect

Everything below is what we picked up by actually living with these machines. It varies by person and by model, but most of it holds.

The applications themselves handle surprisingly large files. Lightroom's batch export doesn't choke on tens of thousands of images — as long as you haven't piled on heavy develop settings. Straight originals are steadier still, and resize-and-compress exports go through fine. Batch-syncing rotation and white balance across a couple hundred shots is slow, but it finishes. What stalls is almost never the app; it's the Finder.
That Finder, and heat, are the real test. Move a few gigabytes of exported photos or video at once, or copy a folder holding several hundred images, and the transfer stops partway. On our setup, sending 55,000 photos in one pass freezes every time right at the halfway point, around 25,000. Anyone who has used these machines for years will know the feeling. Don't expect to multitask on an old Mac. It's not a hard rule and there are plenty of exceptions, but as a guide: running one app for a long stretch is usually fine; doing several things in the Finder at once is not.
Heat depends heavily on the model. The PowerMac G5 has big fans in it and holds up better than you'd expect. The hard case is the G3/G4 towers. You can fit a modified Windows CPU cooler and get by, but the trouble is the other chips, not the CPU. Plenty of people add a SATA card and extra drives — the case has room for it. But the enclosure can't shed the heat, and even with the CPU cool, something else triggers a freeze. When it doesn't freeze outright, you get a steady stream of spinning beachballs. We get wanting to keep that clean exterior intact, but unless you'll cut vents in the bottom or back and fit a large fan, the mod isn't really worth doing. You don't need a bigger power supply, but do take the heat seriously.
Power on the PCI slots and the bus is shaky. A USB 2.0 expansion card is a standard addition, but stick to devices that bring their own power. One external hard drive is fine. Add an SD card reader or a hub on top of that and it falls over. It may be obvious, but even plain USB sticks often won't mount once you plug in more than one.
In short: keep it to one task and it does pretty well. Plug in a lot of things, or start several jobs at once, and it comes apart. Classic old-hardware behavior. Be gentle, be patient, leave headroom. Right after boot the Finder feels snappy, so it's tempting to drive it like a current M-series Mac — don't push it.

Keep the emergency moves in mind, too.

Save often with ⌘+S as you work.
When it starts to hang, click another app or the Finder in the Dock, then use Force Quit from the menu to close just the stuck app.
If the whole screen locks up and Force Quit won't respond, hold ⌘+Ctrl+Power to force a restart.
If it won't boot afterward, hold ⌘+Option+P+R at power-on (PRAM/NVRAM reset) — pressing the reset button and then clearing the PRAM often does the trick too.
If it can't find the startup disk, hold Option at power-on and choose the disk yourself.

There's plenty more where that came from. Wrestling with the odd problem is part of the fun — take it that way, and enjoy the old-Mac life.

What This Site Can Do

Aquafox, a TenFourFox-based browser for PowerPC Macs, gets a Japanese-language pack here — app terminology often reads differently from textbook English, so plenty of people would rather use it with a Japanese interface.
AquaLink is built specifically to cross the SMB3 wall: it lets a Tiger-era G4 connect to current SMB3 shares, and can also turn the G4 itself into a simple NAS that modern Macs and Windows PCs can connect to.
If you used to live in the old Mac OS X-era Finder every day, AquaFinder recreates it on current macOS. It's not for the PowerPC Mac itself, but if this era of Mac OS X speaks to you, you'll probably enjoy it.

Most USB drives these days default to exFAT, since it handles the big files that FAT32 chokes on — and OS X Tiger can't read exFAT at all. That's exactly the gap the exFAT tool I built here closes. No more fighting the "This disk is not readable by this computer... Initialize?" dialog.

A Few Practical Tips

Pick your browser by task. Aquafox/TenFourFox handles most sites reasonably, but for anything with heavy modern JavaScript, plan to use a current machine instead — fighting that battle on PowerPC hardware usually isn't worth it.
Swap spinning disks for an IDE-to-SSD adapter where the model allows it. It's the single biggest speed and reliability upgrade for a machine this age — and if you've already maxed out the RAM, this might actually surprise you more than that upgrade did.
Keep a wired or known-good Wi-Fi connection. Older AirPort cards often don't get along with newer routers; a lot of headaches disappear once the network layer is solid.
Use file sharing instead of optical media or shuffling USB sticks around — save yourself the hassle. This is exactly the gap AquaLink is meant to close.

None of this requires you to be a retrocomputing enthusiast. If a PowerPC Mac is sitting in a closet and still powers on, it's very likely still capable of being genuinely useful — it just needs a couple of the right bridges to today's network and software. That's what this site is here to keep providing.

People assume AI makes this easy. It really did get easier — while I'm writing 300 lines of Python by hand, fixing my own typos as I go, AI writes 3,000 lines wiring Python to SQLite in about 3 minutes, with no typos or indentation mistakes. But what that actually looks like day to day is lining up at least 3, sometimes 4, of Windows, a PowerMac G4, an iBook G4, an M2 MacBook Air, and a 2010 MacBook, taking logs and checking behavior on each one by hand, then feeding facts and direction into VS Code on the M2 MacBook Air to squash bugs one at a time. I did that loop something like 100 times. Writing code got dozens of times faster, but whenever the AI gets stuck, the checking, testing, and log-gathering is still a full day of manual work. Something like 80% of it got faster; the other 20% got harder.

A couple of the apps on this site were built specifically to bring that same AI coding to PowerPC and Intel Macs themselves — PPC Claude Agent and Advisor. I actually use one of them to tweak Firefox's tab bar and bookmark bar height — even a fiddly request like that comes back as real, working CSS.